Als Antwort auf Charlie Stross

IBM 702: announced 1953, first actual installation 1955.

Memory: 11,000 7-bit "characters", or about 10kb. Most had tube memory, but the last one built (the 14th) had magentic core memory and the previous 13 were retrofitted with core.

CPU: tons of tubes!

3950 additions/subtractions per second; multiplication and division dramatically more slowly.

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Als Antwort auf Charlie Stross

Here's an Acorn Atom, released in 1980. I haven't ever used this computer myself. But neither have I used an Apple III, which is, as far as I know, the other well-known computer that came out that year... well-known for being a dud. The photo is from Wikipedia.

As I'm visually impaired, I'd appreciate a more detailed description of this image. #ALTforMe

Als Antwort auf Matt Campbell

@matt Description: well, have you ever seen/touched a BBC Model B computer? The Atom is its predecessor. Case is the same flat box with slope around the keyboard, but white plastic with grooves running front-to-back behind the keyboard. Keyboard is the same layout but no red keycaps or function keys. Logo says ACORN ATOM instead of BBC Model B. Looks to be the same size.
Als Antwort auf Charlie Stross

1971 Busicom 141-PF calculator.

It may not look like a "computer", but it is the first commercial product with a motherboard featuring separate ram chips, rom chips, and a _microprocessor_.

Busicom is less well remembered than the business partner who was reluctant to develop this first microprocessor, the Intel 4004 (also introduced in 1971).

vintagecalculators.com/html/bu…

Als Antwort auf Charlie Stross

@pleia2 “Toot a photo of a computer that first arrived in the year of your birth!”

Elliott 503

The best visual I found is from this extract from National Film Archive "Life in Australia: Hobart", found at retroComputingTasmania.com