In 1981, the shuttle flew twice, India put APPLE into orbit, and the personal computer became a serious machine.
Space Shuttle Columbia completed its first two orbital flights. India launched APPLE, its first indigenous experimental communication satellite, and IBM introduced the Model 5150 personal computer.
In 1981, Columbia rose into orbit and returned to land like an aircraft. The achievement was not simply that it flew. The promise was that it could fly again. The machine was becoming a system rather than a single event.
India launched APPLE, an experimental communication satellite designed and built with limited infrastructure. It gave engineers direct experience with the difficult work that happens after launch: raising an orbit, deploying equipment, and keeping a satellite correctly positioned.
On the ground, IBM introduced its personal computer. The arrival of those three letters changed the status of the category. Personal computing was no longer easy for established business to dismiss as a hobby.
Reusable spacecraft, communication satellites, and office computers appeared to belong to different worlds. All three were signs of the same shift. Machines were becoming platforms that other people could build upon.