Franklin Yuan
8-bit breadboard computer

Breadboard Computer

This is a 8-bit breadboard computer made using only basic logic ICs. Currently there is a clock, three registers, an ALU, and a RAM module. Currently building more registers and a Program Counter. Scroll down for messy details of each module.

Clock

Astable and Monostable Clock
Astable and Monostable Clock
Full clock module
Full clock module
Clock diagram with 555
Clock diagram with 555
Bistable 555 debouncer
Bistable 555 debouncer
Clock logic diagram
Clock logic diagram

Register

Tri state buffer
Tri state buffer
74LS245
74LS245
74LS173 structure
74LS173 structure
Register structure
Register structure

ALU

8 bit full adder structure
8 bit full adder structure
Overall structure
Overall structure
Subtraction Logic
Subtraction Logic
ALU Module
ALU Module