This is a Wikipedia article on the PDP-1, DEC's first minicomputer from 1959. The source describes a machine with 4K words (9.2 KB) of magnetic-core memory, running at 187 kHz using 2,700 transistors and 3,000 diodes. It cost $120,000 new and weighed 730 kg. The article emphasizes its cultural significance: it hosted Spacewar! (1962), one of the first video games, and became the centerpiece of MIT hacker culture, inspiring innovations like early text editors, word processors, interactive debuggers, and time-sharing systems. Of 53 units shipped before production ended in 1969, only three survive today, all at the Computer History Museum. The machine used paper tape for storage and a Type 30 CRT display capable of 1024×1024 addressable points. Benjamin Gurley led the design, which built on the TX-0 and TX-2 predecessors. The article is factual and detailed, though the source doesn't explain *why* a machine so limited in capability became so culturally transformative—was it simply first-mover advantage, or something about interactive computing itself?