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Northern Radio

As I mentioned earlier, I spent some of the period between Christmas and New Year in Preston. And there, while taking a shower at my mother’s house, I had a strange experience.

My mother’s shower is one of the new style of high-tech ones, with a dozen different washing functions as well as a built in light and radio. I gather that there are ones with built in phones, now, too.

One of the funky features of my mother’s shower cubicle is that it includes a fully working FM radio. Its controls are pretty limited and there’s no user interface to provide feedback about what frequency you’re tuned to already, so it’s hard to deliberately tune in to a specific station. Instead, the house policy seems to be that if you don’t like what you’re listening to, you press the “cycle to the next station” button until you hear something you like.

Listening to music is about the third or second most-enjoyable thing that one can possibly do in a shower, in my experience, so I gave it a go. Local station Radio Wave came on, and they were playing some fun tunes, so I sang along as I washed myself under the hot steamy “drench” setting on the shower.

Radio Wave (96.5FM), Blackpool, Lancashire

At the end of a couple of songs, there were some commercials and the show’s presenter shared a few words. And it occurred to me quite how very Northern he sounded.

Living and working in Oxford, I don’t in my day to day life come across people with that broad lanky dialect. Growing up in Preston, and going to school there, I came across it on a daily basis, but didn’t notice it. Now, in its absence, it’s starkly noticeable, with its traditional short gutteral “t” instead of “the”, use of the archaic second-person “tha” (related to “thou”), and the ever-present pronunciation of words like “right” and “light” as “reet” and “leet”, and “cold” and “old” as “cowd” and “owd”.

It’s unfamiliar, but still “homely”. Like that smell that reminds you of where you grew up, this sound to my ears filled me with a strange nostalgia.

It’s funny, because I’m sure I carry a little bit of that accent with me. To the folks in my life around Oxford way, I perhaps sound as foreign as those people in Preston sound to me, now. I spoke on the phone the other week to a couple of people I used to hang out with, back in the day, and my immediate thought was that they’d become more Lanky than I remembered – as if they’d somehow overdosed on butter pie and barm cakes in the years since I last saw them.

But that’s clearly not the case: it’s not their voices that have changed, but my ears. Untouched by the North-Western tongue for so long, it sounds very strange to me now to hear it over the phone, on the radio, or even in person.

It’s a strange side-effect of moving around the country. I wonder what it’s like for my American friends, who have an even bigger gap (both geographically and linguistically) between their homes in the UK and their families in the US, to “phone home”.

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Village Of The Bunnies

The other thing (other than building Tiffany2 and a second computer, to be described later) that happened last weekend, of course, is that it was my birthday! I share my birthday with David Bowie and Elvis Presley, so if you were ever looking for evidence about how astrology is bullshit: that’s it right there (I have no musical talent whatsoever, although I’m pretty good at Guitar Hero).

I didn’t organise myself a surprise birthday party this year, but instead had a quiet – but drunken – afternoon in with the Earthlings. Ruth had asked me earlier in the week, though, if “there’s anything special that I’d like to eat?” And, of course, I answered:

“A gingerbread village under assault from enormous gelatinous bunny rabbits!”

This was a convenient request, because we already had a lot of the ingredients to-hand. So Ruth and I spent some time building, decorating, and demolishing exactly such a scene.

Gummy-bear citizens gather around a candle lamp-post in the gingerbread village. Little do they know of the horror that approaches...
Gummy-bear citizens gather around a candle lamp-post in the gingerbread village. Little do they know of the horror that approaches…
The village, under construction. The first bunny came out a little wet, so we decided that it was dead already, recently slain by the villagers.
The village, under construction. The first bunny came out a little wet, so we decided that it was dead already, recently slain by the villagers.
Armed villagers spear the red bunny.
Armed villagers spear the red bunny.
The green bunny, its maw dripping with gummy blood, advances through the ruins of the damaged North side of the village.
The green bunny, its maw dripping with gummy blood, advances through the ruins of the damaged North side of the village.
The first casualty; his gummy friends stand shocked around him. But with the orange bunny about to reach the South flank, there's nowhere to retreat: they must stand and fight!
The first casualty; his gummy friends stand shocked around him. But with the orange bunny about to reach the South flank, there’s nowhere to retreat: they must stand and fight!
The orange bunny proves to be a challenge to deploy. More warm water is needed.
The orange bunny proves to be a challenge to deploy. More warm water is needed.
The village is lit as the battle against the bunnies continues throughout the night.
The village is lit as the battle against the bunnies continues throughout the night.

This, you see, is what happens when I’m given cocktail-making equipment and supplies for my birthday. Nothing makes this kind of activity make sense so much as spending the whole day drinking champagne cocktails.

I’m not sure if it’s better or worse that as the scene came together I began developing a ruleset for a  tabletop wargame playable using gummy sweets.

In any case, it was a fantastic way to see in the beginning of my thirty-second year.

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My Very Excellent Liz Just Brought Us Sixteen Pizzas

I hadn’t really talked about it yet, because I’ve been too busy… I don’t know… blogging about Marmite and beds and computers or something… but I had the most fabulous time at a New Year’s party hosted by Liz and Simon at their house in Macclesfield. There was drinking, and board games, and truly awful Troma films, and then at midnight we all counted down from 7, or 12, or something, and spontaneously broke out into a chorus of Auld Lang Syne. See: there’s a video and everything –


(can’t see the video? click here to watch on YouTube)

It seems that my mnemonic (as used in the title of this post) is broken, unless we reinstate Pluto as a planet and rename the fourth and eighth planets in the solar system to Lars and Septune, respectively. Which I think are better names, anyway.

It was a fantastic opportunity to catch up with folks I don’t see enough of, to talk about what had gone right (and wrong) about the year gone by, and what we were looking forward to in the year to come. Liz suggested that perhaps this should become a regular thing, a little like “fake Christmas” has begun to, and that seems like a good idea (and I’m pretty sure I heard Bryn volunteer to host it next year…).

By the way: do you remember how last year Paul, Ruth, JTA and I invented Argh! It Burns Night? We’re doing it again this year, and because so many of you expressed an interest in joining us, we’d like you to come too. It’ll be on the evening of Saturday 4th February (yes, we know this is a little late for a Burns Night, but the second part of Ruth & JTA’s honeymoon is going to get in the way otherwise): drop me an email if you want to come along for a night of haggis, whisky, and fanfiction.

New Computer #1 – Tiffany2

This weekend, I integrated two new computers into the home network on New Earth. The first of these is Tiffany2.

Tiffany2 is a small "media centre" style computer with an all-in-one remote keyboard/mouse.

Tiffany2 replaces Tiffany, the media centre computer I built a little under four years ago. The original Tiffany was built on a shoestring budget of under £300, and provided the technical magic behind the last hundred or so Troma Nights, as well as countless other film and television nights, a means to watch (and record and pause) live TV, surf the web, and play a game once in a while.

The problem with Tiffany is that she was built dirt-cheap at a time when building a proper media centre PC was still quite expensive. So she wasn’t very good. Honestly, I’m amazed that she lasted as long as she did. And she’s still running: but she “feels” slow (and takes far too long to warm up) and she makes a noise like a jet engine… which isn’t what you want when you’re paying attention to the important dialogue of a quiet scene.

Tiffany and Tiffany2. Were this a histogram of their relative noise levels, the one on the left would be much, much larger.

Tiffany2 is virtually silent and significantly more-powerful than her predecessor. She’s also a lot smaller – not much bigger than a DVD player – and generally more feature-rich.

This was the first time I’d built an ITX form-factor computer (Tiffany2 is Mini-ITX): I wanted to make her small, and it seemed like the best standard for the job. Assembling some of her components felt a little like playing with a doll’s house – she has a 2.5″ hard disk and a “slimline” optical drive: components that in the old days we used to call “laptop” parts, which see new life in small desktop computers.

Examples of six different hard drive form factors. Tiffany2 uses the third-smallest size shown in this picture. The computer you're using, unless it's a laptop, probably uses the third-largest (picture courtesy Paul R. Potts, CC-At-SA).

In order to screw in some of the smaller components, I had to dig out my set of watchmaker’s screwdrivers. Everything packs very neatly into a very small space, and – building her – I found myself remembering my summer job long ago at DesignPlan Lighting, where I’d have to tuck dozens of little components, carefully wired-together, into the shell of what would eventually become a striplight in a tube train or a prison, or something.

She’s already deployed in our living room, and we’ve christened her with  the latest Zero Punctuation, a few DVDs, some episodes of Xena: Warrior Princess, and an episode of Total Wipeout featuring JTA‘s old history teacher as a contestant. Looks like she’s made herself at home.

(for those who are sad enough to care, Tiffany2 is running an Intel Core i3-2100 processor, underclocked to 3GHz, on an mITX Gigabyte GA-H61N-USB3 motherboard with 4GB RAM, a 750GB hard disk, and DVD-rewriter, all wrapped up in an Antec ISK 300-150 case with a 150W power supply: easily enough for a media centre box plus some heavy lifting if I ever feel the need to give her any)

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Five Beds

I took a tour of the United Kingdom over the Christmas period, and was offered no fewer than five different beds to sleep in. Here’s a little about each of them:

Robin’s Bed

The first bed belonged to Robin, (Ruth‘s little brother) at their mother’s house. Robin wasn’t with us for the entire period that Ruth, JTA and I spent visiting Ruth’s mother, so I was able to annex his bed for much of the time.

Robin, his boss, and his boss's dog turned up in a rental van: "The only vehicle they could get hold of at short notice on Christmas Eve."
Robin, his boss, and his boss’s dog turned up in a rental van: “The only vehicle they could get hold of at short notice on Christmas Eve.”

While at first it appeared to be just a regular single bed, closer investigation revealed that the entire headboard was hinged, with radial bolts to hold it upright during normal use. Opening these bolts allowed the headboard to tilt forward and lie down on the bed. I have no idea what purpose this mechanism was supposed to serve, but it was very useful for getting my hand down the back to plug my mobile phone charger in to the otherwise-inaccessible sockets behind.

Owen’s Folding Mattress

While Robin and his boss were around, though, I was relegated to the living room floor, and given a folding mattress that Owen (Ruth’s older brother) used to keep in his van as a crash-space. Unfolded and then wrapped in a blanket and sheet for comfort, it didn’t look like much except a quick way to consume floor space.

But damned if it wasn’t the most comfortable thing I slept on all week. I’d jarred my back in some awkward way (probably lugging my enormous suitcase and a stack of presents around the country!), and a low, firm mattress on a hard floor turns out to have been exactly what it needed to speed my recovery.

If this kind of futon looks familiar, then like me you probably used to volunteer somewhere that owned one. This one’s a single, which is significantly less-awkward to fold and unfold.

My Mother’s Futon

My next overnight stop was in Preston, visiting my family. My mother keeps a futon in her study, a room barely bigger than the bed when fully deployed, which made getting into and out of the room more than a little challenging, but only marginally less-difficult than re-folding it back into a chair every time.

The futon itself was comfortable enough, but the room was extremely nippy. After a particular cold snap one day, I began taking not one but two hot water bottles to bed, and running an electric heater for an hour or so beforehand. I suppose the main problem was the tiny 4.5-tog “summer” duvet I was using, which I’m sure would have delightful if I were in, say, Egypt. Still: I got to rediscover quite how delightfully opulent it is to get into a bed that’s been freshly warmed by a pair of hot water bottles, which was nice (albeit also necessary).

My Dad’s Bed

When he left Preston to go and finish his final few days with Go North East, he offered me the use of his bed, which – given the temperatures on my mother’s futon – I should have taken.

But I didn’t, so this bed is the bed that wasn’t. Five just seemed like a better number than four for the article title. And no, “five beds” isn’t a metaphor for something (which I feel the need to say after some of the feedback I got to my apparently-too-mysterious earlier post, “Marmite“).

The beds might be cold, but this photo shows a few dozen great things about Christmas at my mother's. When drinking, stop before you get as far back as the cooking oil.
The beds might be cold, but this photo shows a few dozen great things about Christmas at my mother’s. When drinking, stop before you get as far back as the cooking oil.

Liz & Simon’s Massage Mattress

I saw the New Year in at Liz and Simon‘s house in Macclesfield, where I was given the choice between the couch and a “massage mattress”. Naturally, I opted for the latter – one doesn’t turn down a strange-looking, vibrating sleeping partner without good cause!

Unfortunately, I never got to try it out! After a copious quantity of alcohol and a handful of other substances, my one-day-only roommate Alex collapsed onto the sofa and fell asleep within seconds. Not wanting to wake him, I left the mattress off and just, y’know, slept on it (how old-fashioned). It was still a great night’s rest after a fantastic party, though.

So there we are – a round-up review of my sleeping arrangements. Apparently I’m in a slightly off-the-wall blogging mood so far this year. Because sleeping on-the-wall… would be weird.

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Marmite

This blog post is about Marmite. I apologise if it makes you hungry, nauseous, or confused.

Your mate. Marmite.

My partner enjoys Marmite. This isn’t a surprise: I’ve known it for years. Some weekend mornings I’ve seen her enthusiastically scoff down some Marmite on toast, and I’ve known times that she’s been feeling run-down and hungry and the prospect of a bit of Marmite is exactly what she needs to get her motor running again. She doesn’t eat it all the time, but she likes to keep a jar around in anticipation: Marmite lasts pretty much forever, so there’s no hurry.

It’s only since living with her, though, that I’ve seen so much of the strange sticky substance as I have. That’s not her doing, I’ll stress: she’s always respectful of the fact that I seem to just be one of those people who’s just never going to be a Marmite-eater, and she doesn’t surprise me with Marmite-infused foodstuffs. In exchange, I try not to complain whenever I can smell that the jar is open.

Her husband enjoys Marmite too. Sometimes she makes Marmite whirls, pastry spirals with a sharp taste of Marmite, and I think she does so mostly because she knows that he enjoys them so much. I honestly don’t know how often he eats the stuff other than when she serves it: occasionally, I guess.

Marmite whirls. You love them, or you hate them, or you go round and round and round them like an escaped rollercoaster.

I’ve only recently kept Marmite in my cupboard: it’s a new addition to my food supply. Are my partner and husband responsible for this? No… well, only insofar as that they once reminded me that they keep Marmite in the house: “We keep our Marmite in this cupboard,” they said, and that was that. (sometimes they disagree on which shelf the Marmite belongs on, but more often than not they’re in agreement)

But now there’s Marmite in my cupboard. I’m not sure why I keep it there. I still don’t really like Marmite, although I think that with experience I’ve learned to appreciate what others see in its flavour, even if it doesn’t sit comfortably in me.

I look at the jar of Marmite in my cupboard. “Why are you there?” I ask it, “What am I supposed to do with you?” It doesn’t answer. It is, of course, only Marmite. I realise that I’m standing alone in the kitchen, talking to my shelf, and I feel a little stupid. But it’s a puzzle that I can’t solve: how did the Marmite even get into my cupboard? I certainly didn’t buy it. Did it… put itself there?

Time for some buttered toast.

This blog post is not about Marmite. My apology still stands.

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To The North Pole!

In April, my dad’s off to the North Pole, in another of his crazy expeditions! Long-term readers might remember that he and I cycled around Malawi and attempted to canoe down the Caledonian Canal, but his latest adventure makes those two look like a walk in the park!

It’s particularly challenging, I think, because he’s having to walk there. It turns out that there isn’t a regular bus service to the North Pole, which I think pretty-well represents everything that’s wrong with the bus industry these days. I worry about the poor old lady who lives at the North Pole – you know, Santa’s wife – and how she gets out and about when her husband is out in their only flying sleigh.

My dad, dragging a tyre along the edge of the river in Gateshead.

But in any case, dragging a sled behind yourself which holds everything that you need to survive for over a fortnight on the Arctic ice is a monumental challenge for anybody. As part of his training, my dad’s been dragging a tyre, roped to his waist, around Gateshead. This apparently approximates the amount of drag that is produced by a fully-laden sled, although I’m not sure that the experience is truly authentic as polar bears are significantly less-likely than geordies to mock you for dragging a tyre around. Also less likely to maul you.

In fact, now I think about it, the dangers of Arctic exploration – with its shifting ice, temperatures below -30°C, polar bears, and blizzards – are actually quite tame by comparison to going for a stroll in some parts of Tyneside.

In any case, I’m incredibly proud of what he’s doing. His expedition is self-funded, but he’s also accepting sponsorship to raise money for an organisation called TransAid, who help provide sustainable and safe transport solutions in the developing world, where they can make all the difference to people who otherwise wouldn’t be able to reach a hospital, school, or work opportunities.

So if you’re as impressed as I am with this venture, then please find a little spare change to sponsor this worthy cause: sponsor Peter Huntley’s  North Pole trek in aid of TransAid.

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The Old Asylum

I’ve always been enamoured with the concept of urban exploration: that is, the infiltration and examination of abandoned human structures. I was reminded of this recently, when Ruth, JTA and I got the chance to go on an (organised) tour of long-abandoned Aldwych Tube Station in London.

The Eastern platform at Aldwych. Closed in 1914, we missed the last train by almost a hundred years.

I think for me the appeal comes from the same place as it does when I’m looking around, for example, the ruin of a castle or the wreck of a ship. As opposed to the exploration of the natural world, looking around a man-made thing really gives you the feeling that you’re uncovering the long-lost purpose of the place. This place you are was designed and built to fill a particular need and, for whatever reason, it’s now left to rot and decay. And you – the amateur urban archaeologist, are the link that connects this abandoned world with the present.

I’ve been thinking about some of the places I’ve explored – sewer tunnels underneath what is now Deepdale Retail Park, waterlogged WWII bunkers occupied by squatters, disused railway lines and railyards, roofs of semi-accessible castles, and the (then-disused) wreck that was Aberystwyth’s Alexandra Hall, back when tragically-empty buildings was part of the quirky charm of the place, before they transformed into being a symptom of its downfall. I wanted to share with you a story or two. But instead of any of these, I’ve picked a place that none of you are likely to have heard about:

Wittingham Hospital

Wittingham Hospital, near Goosnargh, Lancashire - perhaps my earliest illicit expedition.

In the mid-19th century, the lunatic asylums of Lancashire and Merseyside were overflowing, and Wittingham Mental Hospital was built to replace them. Originally built to hold 1000 patients, it held over 3,500 by the outbreak of the second world war, making it the largest mental hospital in the country. The mental health reforms of the 1960s (and an inquiry into patient abuse), and new drugs and treatments in the 1970s and 1980s, led to it being gradually emptied and, in 1995, closing for good.

I was still at school when word got around about the closure and a couple of friends and I decided to cycle up to the old hospital and explore it, because there’s nothing like schoolboys egging one another on to give you the courage to “break into the old asylum”. Apparently when I was a kid, I didn’t watch enough horror films about haunted old buildings or about murderous psychopaths, because it seemed like a perfectly reasonable suggestion to me. The council have since put up secure fences and begun demolition, but back then it didn’t take more than a little bit of climbing to gain access to the abandoned complex.

A contemporary (2010) photo from inside the hospital by urban explorer "Infiltrator". Click on the photo for his full report and more photos. It's degraded a lot since I visited.

There was a deathly quiet inside the buildings. The distance from the nearest road and the surrounding woodlands muffled the distant sounds of the outside world to less than a whisper, and as the three of us split up and spread out, it was very easy to feel completely alone. The silence was more comforting, though, than eerie: on the hard tile floors and in the big, empty rooms, it’d be impossible to catch anybody unawares, no matter how fleet of foot you might be.

I was surprised to see quite how much furniture and equipment had been simply left: it was almost as if the buildings had been evacuated in a panic, rather than undergoing a controlled, phased closure. Filing cabinets remained, stuffed with papers, in a room with net curtains and a carpet. An upright piano, only slightly out-of-tune, remained in an otherwise empty ward. Beds, operating tables, and cupboards stood exactly as they had when the hospital was still alive.

An old leaflet, discovered on a 2009 expedition by urban explorer "BA". Click on the image for his full story. Apart from looking a little more weathered for the 13 years between my visit and his, this looks exactly like the kinds of things I saw.

I couldn’t understand how a place could be abandoned in this way. It’s as if the place itself had died and, instead of being buried, had just been left to decompose in the open air. It seemed – at the least – irresponsible: a friend of mine even came across surgical supplies and syringes, simply left in a cupboard… but more than that, it seemed disrespectful to the building to leave it responsible for looking after these memories of its old self: things which no longer have any purpose, of which it was the custodian, unwilling and unthanked.

We didn’t take any photos – I’m not sure that any of us owned a camera, back then – and we didn’t liberate any of the paperwork (tempting though it was). I’m pretty sure that not one of the three felt that our parents would have approved of us illicitly gaining access to a disused medical facility, so any evidence of our presence was to be avoided! But there was more than that at stake: spending an hour or two wandering around these forgotten corridors, I felt more like a ghost than like a person. We crept about in silence, not saying a word to one another until we’d all reached perimeter once more. It wasn’t our place to interact with this building: all we were there to do was to observe, impotently: to see the beginning of its long decay, that’s since been documented by so many others. That was enough.

I’ll tell you what, though: that early experience? I totally hold it responsible for my subsequent interest in abandoned places.

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Urban birds sing at higher pitch than rural ones to help song carry further, research shows.

This link was originally posted to /r/birding. See more things from Dan's Reddit account.

The original link was: https://www.aber.ac.uk/en/news/archive/2011/12/title-110460-en.html

Birds that sing their songs at a higher pitch help them travel further in built-up areas.

Previously it was thought that great tits and other common birds sung at a higher pitch in noisy areas to avoid the low pitch noise from traffic and industry.

Now, scientists from Aberystwyth University and the University of Copenhagen have found that it is the buildings that are changing the way that birds sing in cities.

Their new study, published in the journal PLoS One, suggests that urban architecture may be just as important as background noise in shaping how our birds sing.

“Our cities are packed with reflective surfaces, open spaces and narrow channels, which you just don’t get in woodland. Because sounds bounce and travel in different ways, birds have to use songs that can cope with this”, says researcher Emily Mockford. “The higher notes mean the echoes disappear faster and the next note is clearer”.

A surprise result also showed that urban songs transmitted more clearly in woodland than the rural songs of the local birds. So why don’t rural birds also sing urban songs?

Dr Rupert Marshall, Lecturer in Animal Behaviour at Aberystwyth University, commented “In woodland where trees and leaves obscure the view, many species of songbird can tell how far away a rival is by how degraded its song is. In cities there are fewer visual obstacles and song doesn’t degrade as quickly, so city birds may just concentrate on being heard”.

City birdsong may be bouncing off the walls – but does it have the X factor?

The men who really invented the GUI

This link was originally posted to /r/technology. See more things from Dan's Reddit account.

The original link was: http://www.computeractive.co.uk/pcw/pc-help/1925325/the-invented-gui

The IBM PC is not alone in having a significant anniversary this year. It is 25 years since Steve Jobs and Steve Wozniac started flogging Apple 1 circuit boards from a Palo Alto garage. But it was not until 1984 that the first Apple Mac made its appearance, with its revolutionary mouse-driven graphical user interface (GUI).

Apple’s achievement in recognising the potential of the GUI and putting it into a mass-market machine cannot be denied. But Apple did not invent the system, as many still believe.

The basic elements of both the MacOS and Windows were developed at Xerox’s Palo Alto Research Centre. Xerox did not patent them and blithely showed them off to Jobs, who promptly snaffled the lot.

The roots of the system go back still further. Every computer history website will tell you that Doug Englebart, hired by the US Defense Department to find new ways of harnessing the computer, invented the mouse in 1963.

But this is true only up to a point. Englebart’s contribution was important, but his ideas didn’t come out of the blue.

Roots in radar

Like the pulse circuits that provide the heartbeat of computing, the GUI has its roots in early radar systems. It was wartime radar work that got Englebart thinking about dynamic information displays, and radar engineers were the first to encounter the problem of how to use these displays to communicate with an intelligent machine.

Two engineers came up with a trackball, the innards of the mouse, a full 11 years before Englebart unveiled his device. Moreover, it was used to select a position on a screen to convey information to a processor, which is the fundamental operation of a GUI. One of the engineers, 80-year-old Tom Cranston, is still alive and living in Scotland.

Cranston’s early career nicely mirrors the shift the electronics industry went through in the 1940s and 1950s. Pre-war electronics was overwhelmingly analog, using thermionic valves as amplifiers, oscillators and detectors.

Cranston, who was born in Canada, spent World War II in Britain maintaining Air Force analog radio equipment.

After the war he took an electronics-focused engineering physics degree at the University of Toronto, before joining Ferranti Canada at a time when it was trying to gain a foothold in the nascent computer industry.

This used valves predominantly in switch mode for logic circuits. “What I studied in electronic circuits at university had nothing to do with what was set before us at Ferranti,” he said.

The Datar system – starting from scratch

Cranston was project engineer with a team working on a system for the Canadian Navy called Datar, an attempt to marry radar to digital computers which was way ahead of its time when it started in 1949.

Datar enabled a group of ships to share sonar and radar information. Up to 500 objects could be identified and tracked, and each ship saw the whole position plotted relative to its own moving position.

These calculations would be trivial today, but for Datar the logic had to be hard-wired using around 10,000 valves per ship.

Everything had to be done from scratch. The young engineers recruited for the project even had to prove that data could be transmitted by radio – a demonstration (using pulse-code modulation) that finally persuaded the cash-strapped Canadian government to back the scheme. Positional information was stored on a magnetic drum, a precursor of the hard disk.

The demonstration system on Lake Ontario used standard radar displays with a rotating beam that showed the blips of nearby aircraft, and ships; sonar data from notional submarines was simulated. They needed a way for an operator to identify a target blip and to enter its position.

These displays were drawn by conventional analog circuitry: there was no video RAM to play with. An electronic dot cursor could be thrown up during a brief flyback period between screen sweeps; the engineers needed to find a way that the operator could position this cursor smoothly over a target blip and store the co-ordinates.

To Cranston and his colleague Fred Longstaff, this was just another problem to be solved. “It didn’t seem a big thing… there was a tremendous urgency about all this and it is hard to recreate that atmosphere.”

The simplest answer would have been to set the dot’s X and Y deflections separately using two variable resistances, as used in nearly all electronic level controls, and then translate these values into digital co-ordinates.

Cranston and Longstaff came up with a far more elegant solution that used one control instead of two, and delivered the co-ordinates directly.

The wheel thing

Cranston, while on a visit to a naval establishment, had seen someone using a wheel on a stick, like a miniature pedometer, to measure distances on a chart. “We need something like that which works simultaneously in two dimensions,” he said to Longstaff.

Longstaff then came up with the idea of two follower wheels resting at right angles to a ball that was free to roll in any direction. The prototype actually used two pairs of wheels driven by a standard 4in Canadian bowling ball resting on an air bearing, a feature that is simpler to make than it sounds.

“You just mix up some plaster and stick a ball in it when it is beginning to set,” explained Cranston. “Then you let the plaster harden, take the ball out, drill holes into the plaster, and pump air through them. The result is like magic.”

A circle of holes close to the rim of each wheel passed a beam of light to a photo-sensor, which produced a string of countable pulses as the wheel rotated. Counting circuits were well understood by then, Cranston recalls.

One wheel measured upward movement and its opposite registered down, and the count was incremented or decremented accordingly to provide the Y co-ordinate; the other pair worked similarly to get the X co-ordinate.

Shutters blocked light from the two wheels’ measuring movements opposite to the current rotation. A button – the equivalent of a mouse click – was pressed to indicate a target.

Now and then

Through today’s eyes, this arrangement seems over-elaborate: why not use two wheels and a direction flag? Half a century later, Cranston cannot recall the details of why it was done in this way, but it seems to have been a matter of using what was at hand. Nowadays, a single line of code could cope with the changing directions; the Datar team had to hard-wire everything.

Also routine now is the control of screen positions by numbers, but it was new and intriguing to Cranston and Longstaff. An analog control would have a unique position for each screen co-ordinate, but there was no such direct relationship in the case of the trackball: if you moved the cursor by altering the stored number, the ball would still work regardless of its orientation.

They thought of the device as “centreless” and Longstaff jokingly referred to it as the “turbo-encabulator”.

The whole exercise was what in today’s jargon would be called a proof of concept. The team had to show Datar could work in order to raise the money to refine it, and it needed a lot of money. Valves were unreliable and not really suitable for use on a ship, so the whole system would eventually need rebuilding round new-fangled transistors.

Canada could not afford to do this itself and was seeking a partnership with another country. A system was demonstrated to a succession of military and technical decision makers. One US military observer was so astonished by the sophisticated display that he peered under a table to ensure there was no tomfoolery going on.

Nobody bought into the system. Britain and the US, the most likely partners, had their own projects and there was probably a “not invented here” factor.

Ironically, a prototype US system that Cranston saw later at MIT didn’t need a trackball because it was more advanced: targets were identified and tracked automatically.

Research unrewarded

Many people, though, had seen the trackball. The question of patenting it never arose. Ferranti UK, the parent company, had limited contact with its Canadian arm. Executives had little idea of what was going on at the research level.

Cranston said: “Think about the state of play in the computer world in 1952. There were only a handful of operating computers in the world. Almost all were unreliable. There was no common software language… pulse rates were only 50-100kHz. The idea of using a ball to control a cursor which could intervene and change program execution was a million miles ahead.”

Ball resolvers were not new. They had appeared in navigational and ballistic control mechanisms. The achievement of Longstaff and Cranston was to see how one could be used in conjunction with an electronic display. It was, Cranston says, a generation before its time.

Where Datar went

The Datar experience went into a programmable computer called the FP-6000 which was launched in 1961 by Ferranti Packard – the original company merged in 1958 with Packard Electric.

The FP-6000 was one of the first to use an operating system and was ahead of IBM rivals in its ability to multi-task. Its chief architect was Longstaff. He ended his career as a comms guru with Motorola and died five years ago.

The FP-6000 ended up with ICL, after being bought by Britain’s International Computers and Tabulators, and the two UK firms sold 3000 of them worldwide as the 1900 series.

Cranston left Ferranti in 1956 to take what he describes as a “giant leap backwards”. He joined the Canadian arm of a US company making data loggers and alarm scanners for the Canadian power industry that used logic in the form of mechanical switch arrays.

Electronic computers were considered too unreliable and too expensive for the task. Telephone relay logic filled the gap for another decade.

In fact, Intel’s seminal 4004 was designed originally for tasks like this.

Cranston left after 11 years and moved near to Inverness with his Scottish wife, setting up home in an old mill that he converted himself. He taught for several years in the local technical college, introducing students to the mysteries of the microprocessor.

Surprisingly, Cranston does not have a computer. “They are too fascinating,” he said. “I’d get so involved, I wouldn’t have time for anything else.”