Computer System Structure 🖥️

This repository contains academic projects focused on digital logic design and low-level hardware programming.

🌐 Interactive Logic Simulator

A full-scale digital logic simulation developed in CircuitVerse. 👉 Launch Live Simulator

• Concepts: Combinational logic, Adders, and Multiplexers.
• Platform: CircuitVerse (Embedded via GitHub Pages).

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🔬 Low-Level Hardware Programming (MCS-51)

Implementation of a 4-digit multiplexed counter for the STC89C52RC microcontroller using 8051 Assembly.

Features:

• Timer0 Interrupts: Handles high-frequency display multiplexing.
• Dynamic Scanning: Controls a 4-digit 7-segment display via P0 (segments) and P1 (digit enable).
• Input Logic: Individual digit increment (0-9) via push-buttons on P3.2–P3.5.
• Debounce Logic: Software-based signal stabilization for reliable button presses.

Hardware Mapping:

Component	Port	Description
Segments	P0.0-P0.7	Segment lines (a-g + dp)
Digits	P1.3-P1.6	Digit enable (active-LOW)
Buttons	P3.2-P3.5	Increment triggers

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📂 Repository Structure

• index.html — Full-screen simulator integration.
• main.asm — Assembly source code for the STC89C52RC chip.
• README.md — Project documentation.

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Developed as part of the Computer System Structure course at TSI.