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Tuesday, April 27, 2021
CONTINUITY: Vacuum Tube Computer, Part 11: Building a 4-bit Decoder for the Instruction Register
Continuing with the vacuum tube re-implementation of the Motorola MC14500 microcontroller, next on the agenda is the decoder which de-multiplexes the four bit instruction code into 16 lines which control the circuitry that executes the instruction. You can think of this as a vacuum tube 74LS154 [PDF].
Posted at April 27, 2021 11:52