🔌 Logic Circuit Simulator in C

A terminal-based digital logic circuit simulator written in pure C.
This project reads simple text-based .circ files that define circuits, simulates logic gates like AND/OR/NOT/XOR, generates complete truth tables, renders ASCII waveform diagrams, and exports results to CSV — all with zero external dependencies.

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🚀 Features

• ✅ Parse .circ files with INPUT, AND, OR, NOT, XOR, NAND, NOR
• ✅ Simulate logic gate networks from scratch
• ✅ Print full truth tables for all input combinations
• ✅ Generate waveform diagrams (ASCII-based)
• ✅ Export results to truth_table.csv (Excel-compatible)
• ✅ Built with modular C (make-based, portable on macOS/Linux)

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📁 File Structure

logic_simulator/
├── Makefile
├── example.circ           # sample input circuit
├── logic_simulator        # compiled binary
├── truth_table.csv        # CSV output after run
├── src/                   # C source files
│   ├── main.c
│   ├── parser.c / parser.h
│   ├── circuit.c / circuit.h
│   ├── truth_table.c / truth_table.h
│   └── waveform.c / waveform.h
├── obj/                   # object files (auto-generated)

🎓 Why This Project Matters

This project is a full implementation of a digital logic interpreter. It demonstrates:

• Manual parsing of custom file formats
• Graph-based circuit simulation using pointers and structs
• Truth table and waveform generation using basic C
• Real-world C programming: file I/O, data modeling, ASCII drawing

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👤 Author

Husaam Khan
GitHub • LinkedIn