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Third-generation minicomputers were essentially scaled-down versions of mainframe computers, whereas the fourth generation's origins are fundamentally different. [ clarification needed ] The basis of the fourth generation is the microprocessor , a computer processor contained on a single large-scale integration (LSI) MOS integrated circuit chip.
v. t. e. The history of computing hardware covers the developments from early simple devices to aid calculation to modern day computers . The first aids to computation were purely mechanical devices which required the operator to set up the initial values of an elementary arithmetic operation, then manipulate the device to obtain the result.
The fourth generation computers began with the shipment of CPS-1, the first commercial microprocessor microcomputer in 1972 and for the purposes of this list marks the end of the "early" third generation computer era. Note that third generation computers were offered well into the 1990s. The list is organized by delivery year to customers or ...
A third-generation programming language ( 3GL) is a high-level computer programming language that tends to be more machine-independent and programmer-friendly than the machine code of the first-generation and assembly languages of the second-generation, while having a less specific focus to the fourth and fifth generations. [ 1]
ENIAC ( / ˈɛniæk /; Electronic Numerical Integrator and Computer) [ 1][ 2] was the first programmable, electronic, general-purpose digital computer, completed in 1945. [ 3][ 4] Other computers had some of these features, but ENIAC was the first to have them all.
The SDS Sigma series is a series of third generation computers [1] [2] [3] that were introduced by Scientific Data Systems of the United States in 1966. [4] The first machines in the series are the 16-bit Sigma 2 and the 32-bit Sigma 7; the Sigma 7 was the first 32-bit computer released by SDS. At the time, the only competition for the Sigma 7 ...
This includes features like improved support for aggregate data types and expressing concepts in a way that favors the programmer, not the computer. A third-generation language improves over a second-generation language by having the computer take care of non-essential details. 3GLs are more abstract than previous generations of languages, and ...
ESA/390. z/Architecture. v. t. e. The IBM System/360 ( S/360) is a family of mainframe computer systems that was announced by IBM on April 7, 1964, and delivered between 1965 and 1978. [ 1] It was the first family of computers designed to cover both commercial and scientific applications and a complete range of applications from small to large.