Build your 8-bit computer from scratch
summary
A homemade 8‑bit computer on breadboards executes a 4-line binary program that loads 5 (101) and 3 (011), runs a hand‑built adder/ALU and registers, and displays the result 8 on a numeric LED. All basic chips are first implemented with transistors, memory holds the instruction sequence, a JK‑flipflop counter steps addresses, and a simple transistor‑capacitor oscillator provides the clock (avoiding a 555). A temporary sum register prevents feedback loops on the bus. The demo runs autonomously and reliably.
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chapters (10)
- 0:00The journey of discovery
- 2:59Understanding computer basics
- 5:34Architecture and design
- 7:41Binary, bits, and logic
- 11:14Building memory and gates
- 14:03Designing the CPU hardware
- 17:58Executing simple arithmetic
- 21:58Automating with programming
- 26:07Timing and clock signals
- 29:00Future goals and conclusion
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