IBM 7090 - Wikipedia The 7094 7044 Direct Coupled System (DCS) was initially developed by an IBM customer, the Aerospace Corporation, seeking greater cost efficiency and scheduling flexibility than IBM's IBSYS tape operating system provided
IBM 700 7000 series - Wikipedia The IBM 700 7000 series is a series of large-scale (mainframe) computer systems that were made by IBM through the 1950s and early 1960s The series includes several different, incompatible processor architectures
Byte addressing - Wikipedia The IBM 7094 has 15-bit addresses and could hence address 32,768 words of 36 bits The machines were often built with a full complement of addressable memory; addressing 32,768 bytes of 6 bits would have been much less useful for scientific and engineering users
IBM 7090 94 IBSYS - Wikipedia IBM 7090 94 IBSYS IBSYS is a discontinued tape -based operating system that IBM supplied with its IBM 709, IBM 7090 and IBM 7094 computers, and a significantly different, though similar operating system provided with IBM 7040 and IBM 7044 computers
Index register - Wikipedia Index register display on an IBM 7094 mainframe from the early 1960s An index register in a computer's CPU is a processor register (or an assigned memory location) [1] used for pointing to operand addresses during the run of a program It is useful for stepping through strings and arrays It can also be used for holding loop iterations and counters In some architectures it is used for read
IBM mainframe - Wikipedia IBM mainframes are large computer systems produced by IBM since 1952 During the 1960s and 1970s, IBM dominated the computer market with the 7000 series and the later System 360, followed by the System 370 Current mainframe computers in IBM's line of business computers are developments of the basic design of the System 360
Attached Support Processor - Wikipedia Attached Support Processor (ASP) was an implementation of loosely coupled multiprocessing for IBM's OS 360 operating system [1][2] IBM later changed the name to Asymmetrical multiProcessor but retained the acronym ASP ASP evolved from the design of the 7094 7044 direct coupled system, using data channel to data channel communication
Compatible Time-Sharing System - Wikipedia CTSS was first demonstrated on MIT's modified IBM 709 in November 1961 The hardware was replaced with a modified IBM 7090 in 1962 and later a modified IBM 7094 called the "blue machine" to distinguish it from the Project MAC CTSS IBM 7094 Routine service to MIT Comp Center users began in the summer of 1963 and was operated there until 1968