26 Dec
2014
26 Dec
'14
2:56 p.m.
Doug I. wrote:
On the front panel of the original PDP-8 (straight 8),
how many lights are
there?
82?
3 Data Field
3 Instruction Field
12 Program Counter
12 Memory Address
12 Memory Buffer
1 Link
12 Accumulator
12 MQ
1 AND
1 TAD
1 ISZ
1 DCA
1 JMS
1 JMP
1 IOT
1 OPR
1 FETCH
1 EXECUTE
1 DEFER
1 BREAK
1 ION
1 PAUSE
1 RUN
Rick Bensene
The Old Calculator Museum
http://oldcalculatormuseum.com