Here is a professional, clear, and impressive README snippet for your 4-bit ALU GitHub project. You can copy-paste and modify it as per your repository structure:
This project implements a 4-bit Arithmetic Logic Unit (ALU) using Verilog HDL. The ALU is a fundamental building block in any processor, capable of performing various arithmetic and logical operations on 4-bit input operands.
✅ Supports 8 operations:
| Select | Operation | Description |
|---|---|---|
| 000 | Addition | Adds two 4-bit numbers |
| 001 | Subtraction | Subtracts b from a |
| 010 | Bitwise AND | Performs a & b |
| 011 | Bitwise OR | Performs a | b |
| 100 | Bitwise XOR | Performs a ^ b |
| 101 | Bitwise NOT | Performs ~a |
| 110 | Transfer b | Outputs b |
| 111 | Transfer a | Outputs a |
✅ Carry detection for addition and subtraction ✅ Zero flag for result validation ✅ Fully synthesizable and test bench verified ✅ Structured and readable code for easy learning
design.v– ALU module implementationtestbench.v– Comprehensive test bench
Waveforms demonstrate correct operation for all cases with proper carry and zero flag handling. (Add your ModelSim/Verilog simulation screenshots here for better impact)
🔹 Educational purpose: digital design and computer architecture labs 🔹 Base for designing multi-bit ALUs and processors 🔹 Prepares for VLSI interviews and coding rounds 🔹 Enhances understanding of control logic and datapath design
- Integrate multiplication and shift operations
- Extend to 8-bit ALU
- FPGA implementation with real-time testing
- Combine with control unit to design a simple CPU