Explore the instruction sets of legendary DEC computers like the PDP and VAX. This app provides detailed information on each instruction, historical context, and interactive lessons. Discover the machines that shaped modern computing.





250+ iOS apps curated and reviewed
With an average user rating of 4.8★, the dec opcodes category is one of the App Store's strongest. Browse all 250+ apps we track, sorted so the most loved ones surface first.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 | Free | 5.0★ (3) | No | Yes | Jul 2026 | ||
| 2 | Free | 4.8★ (6) | No | Yes | Sep 2026 | ||
| 3 | Free | 4.8★ (1.3K) | No | No | Sep 2026 | ||
| 4 | Free | 5.0★ (1) | Yes | No | Jul 2026 | ||
| 5 | Free | 4.1★ (15) | Yes | No | Sep 2026 | ||
| 6 | Free | 5.0★ (76) | Yes | No | Sep 2026 | ||
| 7 | Free | — | No | No | May 2026 | ||
| 8 | Free | 4.0★ (1) | No | No | Aug 2026 |





Explore the instruction sets of legendary DEC computers like the PDP and VAX. This app provides detailed information on each instruction, historical context, and interactive lessons. Discover the machines that shaped modern computing.






This app provides a comprehensive reference for retro CPU opcodes, including detailed descriptions, assembly examples, and historical context. It covers eighteen iconic processors and offers features like search, sorting, and filtering for easy exploration of historical computing information.






A powerful and beautifully designed calculator app that offers advanced scientific functions, automatic bracket handling, and a unique no-equals button interface. It integrates seamlessly with iOS features like widgets and keyboards for calculations anywhere.