4 ms·
Are any 705s running today? I feel like the cost of keeping it up would be prohibitive. I’m also curious as to what tubes are used here.
by S_A_P 9y ago
Are any 705s running today? I feel like the cost of keeping it up would be prohibitive. I’m also curious as to what tubes are used here.
- creeble 9y agoA few for mining Bitcoin, I think :) I hadn't heard of Eccles and Jordan before this article; I had previously believed that the flip flop was invented by Eckert and Mauchly. Good to know!
- dogma1138 9y ago5865 and 6211 are mentioned in the article there were probably a few more types tho.
- dfox 9y agoThere certainly isn't any still running 705 which serves useful purpose. In fact they were probably all replaced by 7080s and then 360s in sixties as 7080 is software compatible and specific 360 models have some support for running 7080 software. Also the software that ran on these machines is probably simple enough that it got rewritten for more modern machines cheaply.
- kens 9y agoI don't think there are any original vacuum tube computers still running. There are working replicas of the Colossus, ABC, SSEM and (almost complete) EDSAC. As far as tubes, the 700-series circuit manual [1] shows mostly dual triodes: 6211, 5687, 5965, 6350, 6072, 6528. Also 6136, 6197 pentodes. And probably a variety for special cases (e.g. power supply, core). [1] http://www.piercefuller.com/library/700circ.html http://www.piercefuller.com/library/700circ.html