Thanks for the Datapoint 2200 details. For such an influential machine, it seems almost forgotten now. By the way, I took die photos and analyzed the Intel shi

Thanks for the Datapoint 2200 details. For such an influential machine, it seems almost forgotten now. By the way, I took die photos and analyzed the Intel shift-register memory you mention: http://www.righto.com/2014/12/inside-intel-1405-die-photos-of-shift.html http://www.righto.com/2014/12/inside-intel-1405-die-photos-o... An interesting thing about shift-register memory is it performs well if you do sequential access, but if you access anything out of order, you need to wait for the bits to go all the way around, up to 0.5ms.