IBM Computers

Some articles on ibm, ibm computers:

History Of IBM Mainframe Operating Systems - Before System/360
... IBM was slow to introduce operating systems General Motors produced General Motors OS in 1955 and GM-NAA I/O in 1956 for use on its own IBM computers and in 1962 Burroughs Corporation released ... In fact the first operating systems for IBM computers were written by IBM customers who did not wish to have their very expensive machines ($2M in the mid-1950s) sitting idle while operators set up jobs ... Users with other IBM computers or other applications had to manage without operating systems ...