26 Dec
2014
26 Dec
'14
3:18 p.m.
On Fri, Dec 26, 2014 at 02:57:59PM -0700, Doug Ingraham wrote:
This one is seemingly easy.
On the front panel of the original PDP-8 (straight 8), how many lights are
there?
I'll try from memory. There are rows for MA+EMA, MQ, AC+link, MB and PC. That is
12 bits for each row plus 4. Then there are 8 lights indicating which instruction
is executing. Surely there is a run light..
I'm guessing 72 lights.
/P