The MITS Altair 8800, the third commercially available personal computer was released in December 1974.
Spoiler
One explanation of the Altair name, which editor Les Solomon later told the audience at the first Altair Computer Convention (March 1976), is that the name was inspired by Les's 12-year-old daughter, Lauren. "She said why don't you call it Altair - that's where the Enterprise is going tonight." The Star Trek episode is probably Amok Time, as this is the only one from The Original Series which takes the Enterprise crew to Altair (Six). Read more
The MITS Altair 8800 was a microcomputer design from 1975 based on the Intel 8080 CPU and sold by mail order through advertisements in Popular Electronics, Radio-Electronics and other hobbyist magazines. Read more