System/360, also DOS/360, or simply DOS, is the discontinued first member of a sequence of operating systems for IBM System/360, System/370 and later mainframes
latest one in the DOS/360 lineage, which originated in 1965. It is less common than z/OS and is mostly used on smaller machines. DOS/VSE was introduced in
assembly language andsuccessors is a series of assembly languages and assemblers made for the IBM System/360 mainframe system and its successors through the
for System/360 hardware was DOS/360. OS/360 is in the public domain and can be downloaded freely. As well as being run on actual System/360 hardware, it