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History
Per Brinch Hansen
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Per Brinch Hansen was a Danish-American computer scientist known for his work in operating systems, concurrent programming and parallel and distributed computing.
Per Brinch Hansen in 1999
Per Brinch Hansen in 1999
Age 21 in 1959
Age 21 in 1959
At age 29, in the RC 4000 computer lab (1967)
At age 29, in the RC 4000 computer lab (1967)
On vacation in Washington, D.C. (1990)
On vacation in Washington, D.C. (1990)
Operating system
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An operating system (OS) is system software that manages computer hardware and software resources, and provides common services for computer programs.
An IBM System 360/65 Operator's Panel. OS/360 was used on most IBM mainframe computers beginning in 1966, including computers used by the Apollo progr
An IBM System 360/65 Operator's Panel. OS/360 was used on most IBM mainframe computers beginning in 1966, including computers used by the Apollo program.
The first server for the World Wide Web ran on NeXTSTEP, based on BSD.
The first server for the World Wide Web ran on NeXTSTEP, based on BSD.