June 16, 2026
Ctrl+Alt+Del the nostalgia
A brief tour of the PDP-11, the most influential minicomputer of all time (2022)
The old machine that changed computing—and sparked a nostalgic comment war
TLDR: The PDP-11 was a hugely influential early computer that helped make interactive computing mainstream and shaped key software that still matters today. In the comments, fans praised its reliability and elegance, while skeptics argued over whether it was really the most important machine—and whether it was ever truly “inexpensive.”
The Ars Technica piece gives the PDP-11 the royal treatment: a room-sized-ish 1970s computer that helped drag computing out of the era of punch cards and into something people could actually interact with in real time. It helped shape UNIX, the operating system family that later inspired modern systems like Linux and macOS, and it influenced the C programming language too. In plain English: this was one of the machines that helped make modern computing feel like, well, modern computing.
But the real fireworks are in the comments, where nostalgia and nitpicking collide beautifully. One crowd is basically yelling “put some respect on the PDP-11!” and calling it the dependable workhorse of the 1970s, with one commenter bragging they were everywhere from libraries to auto parts stores. Another person swooned over its simplicity, saying its instruction set fit on one page—then immediately delivered the heartbreak of the day: they sold theirs for $25. Brutal.
Still, not everyone was ready to crown it king. One challenger tossed in the Datapoint 2200 as the real most influential machine, kicking off a classic nerd-throne dispute. And another commenter poked at the article’s use of “inexpensive,” basically saying: let’s not get too romantic here, this stuff was hardly cheap. The funniest vibe? A whole alternate-history fantasy where the PDP-11 became the desktop standard and the IBM PC never took over. In other words: part history lesson, part support group, part vintage computer fever dream.
Key Points
- •The article describes the PDP-11 as a pivotal minicomputer that helped bridge the gap between mainframes and later microcomputers.
- •Introduced in 1970, the PDP-11 arrived when computing was dominated by expensive mainframes and non-interactive batch processing.
- •The article states that the PDP-11 helped enable the development of UNIX and the C programming language and influenced later computer architectures.
- •Early PDP-11 hardware combined modest memory and storage with a 16-bit architecture, eight registers, and the expandable UNIBUS design.
- •According to the article, the PDP-11 was widely deployed across industrial, military, infrastructure, and telecommunications applications and sold more than 600,000 units over 22 years.