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Introduction to the New Mainframe: IBM z/VSE Basics by Martin Walbruehl, Joerg Schmidbauer, Ingolf Salm, Bill Ogden, Wayne O'Brien, Wilhelm Mild, Marco Kroll, Jerry Johnston, Helmut Hellner, Hans Joachim Ebert, Wolfgang Bosch, Mike Ebbers

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A brief look at IBM mainframe history
This appendix discusses the development of the IBM mainframe from 1964 to the present, as shown in Figure A-1.
Figure A-1 IBM mainframe timeline
On April 7, 1964 IBM introduced System/360, a family of five increasingly powerful computers that ran the same operating system (OS) and could use the same 44 peripheral devices. Along with S/360, the following concepts were also introduced:
The input/output (I/O) ...

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