A brief tour of the PDP-11, the most influential minicomputer of all time (2022)
9 hours ago
- #assembly programming
- #computing history
- #PDP-11
- Minicomputers bridged mainframes and microcomputers, with the PDP-11 being the most influential.
- The PDP-11 was introduced in 1970, sold over 600,000 units in 22 years, and helped birth UNIX and C.
- Its architecture featured 16-bit orthogonal design, eight registers, and a flexible UNIBUS for peripherals.
- Used in real-time applications like factory automation, missile defense, and air traffic control.
- PDP-11 assembly programming was efficient due to its elegant instruction set and addressing modes.
- The split instruction and data memory segments enhanced stability and doubled address space.
- Influenced modern CPUs and operating systems, leading to developments in Linux, macOS, and programming languages.