Building a Computer From Scratch in Proteus 4 Bit Register Explained

You’ve seen people build computers from scratch on breadboards… but what if you could learn EVERYTHING without buying a single component? This video shows a 4-bit register fully simulated in Proteus — the same fundamental logic that real CPUs use to store data internally. Every flip-flop, every LED, every clock pulse you see here is the exact foundation used in Ben Eater’s 8-bit computer. As the clock runs, the register loads, holds, and outputs values through the bus lines with no breadboard, no wires, no parts, just pure digital logic. And now the big question: 👉 Should I turn this into a full series where we build an entire 8-bit computer from scratch inside Proteus? A complete CPU: control units, ALUs, registers, memory, buses, and clock systems — step by step, fully animated, fully simulated. If you want to understand how a computer REALLY works internally without spending money, comment “Build the computer.” Welcome to Embedded Systems Diary, where we simulate the impossible.