The IBM Computer turns 40 today. A "skunkworks" project out of Boca Raton, FL, the IBM 5150 personal computer had off-the-shelf parts and MS-DOS as its operating system, which Microsoft bought for that very reason. The 5150 started at around $1500, with an Intel 8088 processor at 400 MHz and 16KB of RAM. The floppy disk drive was optional.
It was less than a year that the IBM clone was born and the computer industry was off to the races.