October 7, 2010 AT 11:12 am

The Analytical Engine vs. The ZX81

677Px-Sinclair Zx81

The Analytical Engine vs. The ZX81. John writes –

Many people got started with computing in my age group with the Sinclair ZX81 (which in the US was sold as the Timex Sinclair 1000). Reading through Allan Bromley’s excellent papers on Babbage’s Analytical Engine (as described in 1847) I thought it might be fun to compare the two machines.

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  1. my first purchased computer was the TS-1000, and then the TS-2068. The first one eventually died, but the second one I have, but it needs a little soldering to fix the RF output.

  2. John says Babbage invented pipelining? In the 1840’s? Wow, incredible. Genius. (http://en.wikipedia.org/wiki/Pipelining)


  3. Ahh! I loved my Timex/Sinclair 1000! What a rotten computer. The 16k ram module on the back would wobble, the computer would crash often, and your work, lost.

    Minor quibble : The T/S1000 was an upgraded version of the ZX81. The 81 had 1K of ram, while the T/S1000 had two.

  4. This was one of my first computers……and my fingers still hurt from pressing those keys. I still have it and it works great!

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