InkboxSoftware/excelCPU
16-bit CPU for Excel, and related files observed · 2026-08-28
Health v2 · maintenance only
26/100
- Activity 0
- Release rhythm 35
- Longevity 67
Flags: no_releases
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-02. Adoption (stars, forks) is never an input.
- gap_med: n/a
- age_days: 949
- days_rel: n/a
- days_push: 660
- n_releases_24m: 0
Adoption not part of the score
4757 stars · 411 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded
A 16-bit CPU implemented entirely within an Excel spreadsheet, featuring 16 registers, 128KB of RAM, and a 128x128 display, driven by Excel's recalculation engine. It includes a custom assembly language (Excel-ASM16) with a Python compiler that assembles programs into a ROM spreadsheet the CPU can execute.
Use cases
- run a 16-bit CPU inside Excel
- write assembly programs for a spreadsheet-based computer
- learn how CPUs execute instructions step by step
- compile Excel-ASM16 assembly into a ROM spreadsheet
- experiment with clock-driven computation in spreadsheets
When to choose
- you want a hands-on, visual way to learn CPU architecture and assembly
- you enjoy novel computing-within-spreadsheet projects
- you want to run sample programs on a simulated 16-bit machine without installing emulators
When to avoid
- you need a fast or practical CPU emulator for real workloads
- you require a production-grade development toolchain
- you cannot use Microsoft Excel with iterative calculation enabled
Facets
application · maturity active
simulation compiler interpreter developer-tools hardware education developer-tools simulation windows cross-platform excel cpu-emulator assembly 16-bit spreadsheet-computing hobby-project macos
1 source
- readme: https://github.com/InkboxSoftware/excelCPU · fetched 2026-08-28 · 192d38559d16
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| InkboxSoftware/excelCPU | main | 26 |
For agents
markdown · JSON · MCP: product_card(name="InkboxSoftware/excelCPU")
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem