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Mainframe computers are often used as servers. The term mainframe was derived from the large cabinet, called a main frame, [2] that housed the central processing unit and main memory of early computers. [3] [4] [5] Later, the term mainframe was used to distinguish high-end commercial computers from less powerful machines. [6]
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.
Mainframe computers are computers used primarily by businesses and academic institutions for large-scale processes. Before personal computers, first termed microcomputers, became widely available to the general public in the 1970s, the computing industry was composed of mainframe computers and the relatively smaller and cheaper minicomputer variant.
In the early 1960s IBM undertook similar projects for other airlines and soon decided to produce a single standard booking system, PARS, to run on System/360 computers. In SABRE and early versions of PARS there was no separation between the application and operating system components of the software, but in 1968 IBM divided it into PARS ...
The following list of text-based games is not to be considered an authoritative, comprehensive listing of all such games; rather, it is intended to represent a wide range of game styles and genres presented using the text mode display and their evolution across a long period.
The IBM System/360 (S/360) is a family of mainframe computer systems announced by IBM on April 7, 1964, [1] and delivered between 1965 and 1978. [2] System/360 was the first family of computers designed to cover both commercial and scientific applications and a complete range of applications from small to large.
The IBM 700/7000 series is a series of large-scale computer systems that were made by IBM through the 1950s and early 1960s. The series includes several different, incompatible processor architectures. The 700s use vacuum-tube logic and were made obsolete by the introduction of the transistorized 7000s.
The Burroughs Large Systems Group produced a family of large 48-bit mainframes using stack machine instruction sets with dense syllables. [NB 1] The first machine in the family was the B5000 in 1961, which was optimized for compiling ALGOL 60 programs extremely well, using single-pass compilers.