IBM 7090 computer (left) in the computer centre of CERN,1963. In 1954 CERN,the European particle physics laboratory was founded in Geneva,Switzerland. Its work using high-energy particle accelerators has led to many key discoveries in the field of sub-atomic particles and high-energy physics. The IBM 7090 was a transistorised version the earlier 709,which had been oriented specifically towards scientific work. It was introduced in 1959 and used a 36-bit instruction format,with a 3-bit prefix,15-bit decrement,3-bit tag and 15-bit address. It used floating- point arithmetic | |
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