The PDP-8: How a 12-Bit Minicomputer Made Computing Affordable
From Front Panel to Program: Thinking Like a PDP-8
The PDP-8, introduced in 1965 for around $18,000, was a 12-bit minicomputer that brought computing to labs and factories. Its simple accumulator-based architecture, with a tiny instruction set and a one-bit link register, made it easy to understand. The PDP-8 family evolved from discrete transistors to integrated circuits while keeping the same programming model, proving that a stable architecture can outlive its implementation.
The PDP-8 is a 12-bit computer that has a tiny instruction set, a single main accumulator, a peculiar memory-addressing scheme, a one-bit link register, instructions that perform several jobs at once, and even a handful of registers that aren't actually registers at all.
- Animats
There's also a working PDP-10 console replica you can buy.[1]
There was a really nice IBM 1401 data center simulator written in Unreal Engine at [1]. You could mount tapes, punch cards, push buttons, and actually operate the machine. But the site is gone. There's some archived material.[2] But even his Youtube videos are now "Private". Here's someone else running his simulator.[3]
I hope the simulator hasn't been lost.
[1] https://obsolescence.dev/pdp10.html
[2] https://web.archive.org/web/20250605101441/https://rolffson....