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Jim Wilkins[_2_] Jim Wilkins[_2_] is offline
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Default Rifling machine plans

"pyotr filipivich" wrote in message
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I recall reading an article of a guy who made a processor using
individual transistors soldered to circuit boards.

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pyotr filipivich


The Army taught me computer electronics at that RTL and DTL level in
1970. Flip-flops used tricky level shifting and diode steering to
direct a capacitive clock pulse to turn off the base of the On
transistor. Luckily I had learned DC and AC network analysis in
college Physics classes.
Later I got into the design of custom ICs, beginning with a DRAM
controller for the digital signal processor in a color scanner. When I
started as a lab tech at Unitrode my training assignment was to
dissect an IC layer by layer with nitric acid and draw the schematic.
I got all the current mirrors, gates, op amps and comparators right
but couldn't decipher the innards of the voltage reference circuit.