NAND-to-Computer: A First-Principle Computer Build

This project implements the hardware layers of a computer, following the Nand2Tetris(https://www.nand2tetris.org/) course. Starting from a single NAND gate, each chapter builds on the last — culminating in a fully functional computer.

All hardware is written in HDL (a simplified Verilog).

Project Structure

01 — Boolean Logic

Elementary logic gates, all built from the primitive NAND gate.

Chips:

Not, And, Or, Xor, Mux, DMux, Not16, And16, Or16, Or8Way, Mux16, Mux4Way16, Mux8Way16, DMux4Way, DMux8Way

02 — Boolean Arithmetic

Adders and the ALU, built from the gates in chapter 01.

Chips:

HalfAdder, FullAdder, Add16, Inc16, ALU

03 — Memory

Memory elements, from a single bit up to 16K RAM.

Chips:

Bit, Register, RAM8, RAM64, RAM512, RAM4K, RAM16K, PC

04 — Machine Language

Assembly.

05 — Computer Architecture

The complete computer, assembled from all previous chapters.

Chips:

CPU, Memory, Computer

How to Run

Load any .hdl file (or .asm for chapter 04) into the [Nand2Tetris Hardware Simulator](https://www.nand2tetri s.org/software) and run the corresponding .tst test script.