I built an 8-bit CPU simulator in Python from scratch
I built a tiny 8-bit CPU simulator in Python to better understand how computers work at a low level. It visualizes registers, memory, and instructions in real-time, so you can actually see each operation as it happens. You can write simple assembly code and watch how the CPU executes it step by step. The project is mainly for learning and experimentation, but I’d love feedback or ideas for improvement.
I built an 8-bit CPU simulator in Python from scratch launched on October 24, 2025 with 72 votes, #370 of 8,178 launches that month and more than 95% of that year's launches.
In plain words
An 8-bit CPU simulator built in Python that lets users write and execute assembly code while watching the processor work step by step. It displays registers, memory, and instructions in real time, making low-level computer architecture visible and interactive. Designed for learning and experimentation, the tool helps developers understand how CPUs process operations at a fundamental level.
written from the facts on this page · September 2026
From the sources
A tiny CPU simulator written in Python. Contribute to sql-hkr/tiny8 development by creating an account on GitHub.
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Source: Show HN post ↗
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