Technology

How to build computer inside computer?

Even wondered how computer is built? And no, I’m not talking about unscrewing your laptop… but exactly how the things happen inside the CPU. If so, then check out TINA from Texas Instruments and open my custom-made all-in-one computer.

I spend few weeks preparing this schematic. It contains clock, program counter, memory address register, RAM, ALU, A&B registers, instruction register, microcode decoder, instruction register, address register and program counter. Well that’s a lot ot stuff you need to build 8-bit data and 4-bit address computer, even in simulator.

Sample program in my assembly + binary representation, which needs to be manually enter into memory in the simulator as there is input and output device designed for this machine. You need to program directly into memory and read its results also directly from the same memory but in different region.

Here is a general overview:

Clock, program counter, memory address register:

Memory address register, RAM:

ALU (arithmetic logic unit):

A register with bus:

Microcode area

Comparator to achieve conditional jumps: