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Britain's oldest computer rebooted, first time in decades

Elliot Harrison   on 03 September 2009 - 20:48, updated 05 September 2009 - 22:03 · 51 comments & 13094 views

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According to the BBC's technology website, Britain's oldest computer, the Harwell, is being reported to be undergoing a reboot for the first time in decades. Plans are being made to transport it to the National Museum of Computing at Bletchley where it is to be restored to working order.

The computer was originally built and used at the Atomic Energy Research Establishment in Harwell, Oxfordshire. Construction started in 1949, and became operational in April 1951 and remained in use until 1957. The computer used dekatrons for volatile memory (similar to RAM in a modern computer) and paper tape for both input and program storage. Its purpose was to perform mathematical equations. Gargantuan in size compared to our greatly powerful modern day equivalents, the computer stands at 2.4m x 5m.

Built by a small team of three people, the device was capable of doing the work of six to ten people and ran for seven years until the establishment obtained their first commercial computer. One of the designers who helped build the Harwell computer, told the BBC the research was officially "for civilian nuclear power projects."

"Officially it was to help with general background atomic theory and to assist in the development of civilian power," he said. Of course, it [the Atomic Energy Research Establishment] had connections to the nuclear weapons programme," he added."

Although having quite a short service to the nation, the computer continued to be a popular piece of technology, if only as a prize. Retired from service at Harwell, the system was offered as a prize for colleges, with Wolverhampton and Staffordshire Technical College (later Wolverhampton University) taking ownership and renaming it as the WITCH (Wolverhampton Instrument for Teaching Computing from Harwell). It was used in computer education until 1973.

Since then, the computer has been on display inside Birmingham's Science Museum but more recently retired into storage at Birmingham City Council Museums' Collection Center. There have been some important predecessors to the Harwell - for example the EDSAC (Electronic Delay Storage Automatic Calculator) and the commonly nicknamed 'baby' (Manchester's Small-Scale Experimental Machine ) which has also been rebuilt, but not using original parts.

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(1 reply) #1 Dead'Soul on 05 Sep 2009 - 22:29
constructed in 2 years? yes, its harder than building an AT computer...
#1.1 roadwarrior on 05 Sep 2009 - 22:48
Computers in those days were built from individual components, not the cards, etc. used in modern computers. Imagine soldering together the millions of individual transistors that would make up a typical CPU. It would take ages.
#2 yxz on 05 Sep 2009 - 22:34
paper tape for both input and program storage

:<
(4 replies) #3 John Ericson on 05 Sep 2009 - 22:43
So what's the uptime?
#3.1 AUSSIE_FLOYD_FAN on 06 Sep 2009 - 00:56
John Ericson said,
So what's the uptime?
erm 40-50 years?

PRE MIcrisoft operationg system for the long haul
#3.2 omni on 06 Sep 2009 - 04:24
AUSSIE_FLOYD_FAN said,
erm 40-50 years?

PRE MIcrisoft operationg system for the long haul


The word reboot in this context is extremely misleading -- it hasn't actually been powered on that long. The reboot they are talking about is more like a rebuild -- it's just a misnomer from typical non-technical news sources... I'm a little disappointed Neowin didn't pick it up.
#3.3 Tim Dawg on 06 Sep 2009 - 09:01
omni said,
The word reboot in this context is extremely misleading -- it hasn't actually been powered on that long. The reboot they are talking about is more like a rebuild -- it's just a misnomer from typical non-technical news sources... I'm a little disappointed Neowin didn't pick it up.


Agreed. I was thinking exactly the same thing. The first thought that came to mind is how reliable their power is to not have even an accidental reboot in decades! UPS or not. Then come to find out it's not "reboot" it should be titled "Oldest computer BOOTED for first time in decades".

On a side note, I hope they don't find out the oldest computer has the oldest virus that's going to unleash armageddon with the most diabolical evil viral code that no AV can protect against bringing the world's computer systems to the ground. BWAH-HA-HA-HA!!!!


Last edited by Tim Dawg on 06 Sep 2009 - 09:06
#3.4 hyb on 06 Sep 2009 - 16:33
or not
#4 Regression_88 on 05 Sep 2009 - 22:43
So the title is actually incorrect. It's not being rebooted, which would mean it is "currently running and has to be re-started" but rather is being "booted" for the first time in decades.

What will the computer be doing once re-started? HTTP server explaining itself? Running a small "Blinkenlights" display? Obviously it won't be running "Rogue" or "Sail" (ever try to paper tape in commands for those games? me neither)... and I'm fairly sure graphics aren't going to be that great either- imagine 6-10 people (that's the number of people it replaced) running around with pencils and erasers.

Maybe it will join the grid and contribute that last little bit of proof to the anthropogenic global warming theory... yeah, maybe....

Otherwise, great news and a tremendous waste of electricity.

(the above is meant as humor and infers a realistic question about the how's and why's we do some of the things we do)
(6 replies) #5 JHH on 05 Sep 2009 - 23:35
Waste of energy.
#5.1 Soldiers33 on 05 Sep 2009 - 23:40
JHH said,
Waste of energy.

+1 i say get rid of that rubbish and not only save power but space
#5.2 Skyfrog on 06 Sep 2009 - 00:21
Get rid of that rubbish? I'm glad people like you don't run a museums.
#5.3 Regression_88 on 06 Sep 2009 - 00:23
JHH said,
Waste of energy.

That's what I said here: http://www.neowin.net/news/main/09/09/05/c...cted?cid=885446

Regression_88 said,
Otherwise, great news and a tremendous waste of electricity.


#5.4 Skyfrog on 06 Sep 2009 - 01:09
It says they are going to restore it and start it up; not that it's going to be running 24 hours a day.
#5.5 Solid Knight on 06 Sep 2009 - 01:17
^ Exactly. Just because they are starting it up doesn't mean they're going to use it all day every day.
#5.6 Dead'Soul on 06 Sep 2009 - 10:30
yes, they should use Atom
(1 reply) #6 zeta_immersion on 05 Sep 2009 - 23:36
insane ... is nice to hear about these things today ... is amazing how much we have evolved and yet we still whine about computer running slow ....
#6.1 idczar on 06 Sep 2009 - 09:51
that's definitely one freaking ooooold computer..wow
(1 reply) #7 ilike2burnthing on 06 Sep 2009 - 00:11
Does it run Windows 7? =P
#7.1 Magallanes on 08 Sep 2009 - 13:13
yes but aero.
(2 replies) #8 .Kompressor on 06 Sep 2009 - 01:45

yes it is a waste of good electrical power....

plus....is there anyone ALIVE who can still use/program it (must be a dead language/instructions knowledge) or are they just booting it up and pretending it's working by the sound or screen output. haha
#8.1 XerXis on 06 Sep 2009 - 07:16
.Kompressor said,
yes it is a waste of good electrical power....

plus....is there anyone ALIVE who can still use/program it (must be a dead language/instructions knowledge) or are they just booting it up and pretending it's working by the sound or screen output. haha


it doesn't have a screen
#8.2 +Kirkburn on 07 Sep 2009 - 05:03
.Kompressor said,
plus....is there anyone ALIVE who can still use/program it (must be a dead language/instructions knowledge)

I'm sure by 1949 they had thought of writing stuff down
(2 replies) #9 Xaero67 on 06 Sep 2009 - 02:00
What kind of Operating System do those computers use?
#9.1 XerXis on 06 Sep 2009 - 07:18
Xaero67 said,
What kind of Operating System do those computers use?


it doesn't have an operating system. It just takes bytecodes (fed via paper tape) as input and outputs the result (also via paper tape). No operating systems involved, no programs, no drivers, pure hardware baby . Like all the computers from that time.
#9.2 Magallanes on 08 Sep 2009 - 13:13
Oh, i miss peek and poke.
(2 replies) #10 humcheepeng on 06 Sep 2009 - 04:03
But will it run Crysis?
#10.1 Soldiers33 on 06 Sep 2009 - 09:16
humcheepeng said,
But will it run Crysis?

i think the question is but will it blend?
#10.2 The Teej on 06 Sep 2009 - 14:58
Soldiers33 said,
i think the question is but will it blend?


You'd have to use a big blender, haha.
(1 reply) #11 Se7enVII on 06 Sep 2009 - 05:24
Title is a little bit misleading.
#11.1 stezo2k on 06 Sep 2009 - 08:52
how so?
#12 CrazyK on 06 Sep 2009 - 07:12
I think we have about 20 of those in our office still, or at least it feels that way sometimes.
(4 replies) #13 robyholmes on 06 Sep 2009 - 09:00
Get this thing folding! It would make at-least 2 points a year!
#13.1 Tim Dawg on 06 Sep 2009 - 09:07
Lol. "State of the art"
#13.2 Neoauld on 06 Sep 2009 - 14:14
robyholmes said,
Get this thing folding! It would make at-least 2 points a year!


the folding screensaver would be too much for it lul
#13.3 .Kompressor on 06 Sep 2009 - 14:35
Neoauld said,
the folding screensaver would be too much for it lul



any screensaver would be too much code...lol...that and it doesn't have a screen...just a ticker tape output...
#13.4 mmck on 07 Sep 2009 - 01:48
ticker tape saver - so it would just stop.
#14 Hahaiah on 06 Sep 2009 - 20:03
I hate to admit it, but I worked on similiar (tape date) equipment in the army and they are incredibly fussy machines. Moving to digital was a HUGE LEAP from this stuff in almost every regard. But as someone said before, it would take a huge effort to rebuild, but what's the point. If the rebuild uses different components than the original, where's the historical value? With no historical value, it's just a bunch of guys with toys showing off ...
#15 AUSSIE_FLOYD_FAN on 06 Sep 2009 - 21:34
Wouldn't it have less computing power then a cheap wrist watch? l predict a replacement here hehehehehe4
(2 replies) #16 Alley Cat on 06 Sep 2009 - 23:49
How fast was the CPU ?
#16.1 SirDoan on 07 Sep 2009 - 00:38
lol i dont even want to know.
#16.2 Huffdady on 08 Sep 2009 - 20:25
25 mhz? LoL
#17 Kosh on 07 Sep 2009 - 05:47
I guess when they boot it up, it asks for Dr. Falken and wants to play some Tic Tac Toe
#18 redfox2200 on 07 Sep 2009 - 07:53
can we use water cooling with that ?
(1 reply) #19 HalcyonX12 on 07 Sep 2009 - 19:05
"Restored to working order" implies that it wasn't turned on in the first place, so isn't this just a "boot" and not a "reboot"?
#19.1 Magallanes on 08 Sep 2009 - 13:16
indeed, the title is misleading.
#20 boho on 08 Sep 2009 - 10:02
How many times have we heard that there is a computer somewhere that hasn't been rebooted in 20 years, only to hear that it is just a cheap jibe at Microsoft's propensity to require re-boots due to configuration changes or updates.

This story will turn out to be as misleading as all the others I've read about... Servers that have never been re-booted in decades.
#21 EVANK on 08 Sep 2009 - 12:19
Oh my how we have come a long way since then, I bet the boffins of those days didn't think it would have evolved into what we have today. Microsochips doing calculations in realtime, processors being able to do calculations faster than the human brain, and these are installed in you home computer.


Click her to see it in action
#22 alex09 on 14 Nov 2009 - 07:49
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