IBM GC28-6534-4 IBM System 360 Operating System Rel 21 Introduction Nov72 free download

File name GC28-6534-4_IBM_System_360_Operating_System_Rel_21_Introduction_Nov72.pdf

File No. 8360-20 Order No. GC28-6534-4 OS o Systems Reference Library IBM System/360 Operating System Introduction This publication describes operating systems in general and introduces the IBM System/360 Operating System. The publication is intended for anyone interested in the system/360 Operating o System, whether or not he is familiar with other operating systems. It describes the purpose, design objectives, organization, function, and application of the System/360 Operating System, and how it was influenced by previous systems; i t also describes System/360 compatibility with System/370. The operating system consists of programming aids and a control program that schedules and supervises the processing of data. The system is designed for a broad range of applications, including teleprocessing and multiprocessing. It helps a System/360 data processing installation increase productivity by using its resources more effectively. / .. ',- ,/), ,I ., Fifth Edition (November, 1972) This is a reprint of GC28-6534-3 incorporating changes released in the following Technical Newsletter: GN28-2512 (dated January 15, 1972) This edition applies to release 21 of IBM System/360 Operating System, and to all subsequent releases until otherwise indicated in new editions or Technical Newsletters. Changes are continually made to the information herein~ before using this publication in.connection with the operation of IBM systems, consult the latest IBM System/360 and system/370Bibliograph a, Order No. GA22-6822, and the current SRL NeWs'I'etter, Or er No. GN20-0360, for the editions that are applicable and current. Requests for copies of IBM publications should be made to your IBM representative or to the IBM branch office serving your locality. A form for readers' comments is provided at the back of this publication. If the form has been removed, comments may (C-'~ be addressed to IBM Corporation, Publications Development, I' Department D58, Building 706-2, PO Box 390, Poughkeepsie, N.Y. 12602. Comments become the property of IBM.