die alu block diagram

Reverse-engineering the surprisingly advanced ALU of the 8008 microprocessor

A computer’s arithmetic-logic unit (ALU) is the heart of the processor, performing arithmetic and logic operations on data. If you’ve studied digital logic, you’ve probably learned how to combine simple binaryΒ adder circuitsΒ to build an ALU. However, the 8008’s ALU uses clever logic circuits that can perform multiple operations efficiently. And unlike most 1970’s microprocessors, the […]

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