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8-Bit ALU

Project Description

The 8-Bit ALU (arithmetic logic unit) can currently perform addition and subtraction of two 8-bit numbers stored in the memory registers. The ALU is part of a bigger project inspired by Ben Eater (youtuber) to create a simple working computer on a breadboard. Currently, there are three parts: a potentiometer adjustable clock module, two 8-bit registers, and the ALU. Future additions include the RAM module and the CPU.

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Methods

  • Built a potentiometer controlled clock module on a breadboard using 555 IC chips, taking advantage of capacitor charge and discharge cycles

  • Used D registers to create two 8-bit memory modules for the computer

  • Wired signals to a binary adder IC chip including carry in and carry out signals to create the working ALU

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