28 Nov
2009
28 Nov
'09
8:31 p.m.
one example is the Apollo AGC used nothing but 3 input RTL nor
gates if memory serves. The idea was then they only had to qualify
one part when ICs were still pretty new and not so reliable(mid 60s).
NOTE: by time the AGC flew it was already a full generation behind.
Generally it would be overall easier and more efficient of a wider
group of parts were used even if they were still SSI
(7400 Quad nand, 7404 hex inverter, 7432 quad OR and maybe
7474 dual Dflop)
Allison
Ben wrote:
Chuck Guzis wrote:
Schmitt triggers aren't the only way (or even
the best way) to
debounce. Why should that drive your entire parts choice?
The joke here, is I only use ONE part.
--Chuck
I suspect that however many
classic computers
only used a handfull of different type chips.
Ben.