Fourth Generation of Computer

Fourth Generation of Computer: (1976 -1999)

In this fourth generation of computer, there were developed Large Scale Integration or LSI (1,000 devices per chip) and Very Large Integration or VLSI (10,000 devices per chip). These developments enabled the entire processor to fit into a chip. In fact, the entire computer with the Microprocessor, the main memory, and I / O controllers could fit on the same chip for the simplest system.

  • Timetable: 1976 -1999
  • Use: Microprocessor

Fourth Generation of Computer

Details about Fourth Generation of Computer

The first microprocessor was first introduced by Intel in 1971, which was invented by his employee Ted Hoff. They named it Intel 4004; the First computer on a chip. Core memories were now circulated from memories and high-speed vectors of semiconductor, dominance on the scenario. The number of such a vector is the Cray 1, Cyber205 and Cray X-MP.

 A variety of parallel architecture also developed, but they were at least an experimental level. In the programming language, it is conducive to high-level languages such as FP or Functional Programming and PROLOG (Programming in Logic).

Intel microprocessor Pentium 4 HT 651 3.4 GHz - SL9KE (Cedar Mill)
Intel microprocessor Pentium 4 HT 651 3.4 GHz - SL9KE
Declare programming style was the basis of these languages where a programmer can leave many details in the compiler or runtime system. Related languages like PASCAL, C used an imperative style.

Two another specific development of this era was a programming language and UNIX operating systems. The Dennis Ritchie (the writer of C language) and Ken Thompson used C Language to write a special type UNIX for DEC PDP 11. This C-based UNIX was extensively used in many computers.

 Ken Thompson (sitting) and Dennis Ritchie (standing) at PDP-11
 Ken Thompson (sitting) and Dennis Ritchie (standing) at PDP-11
Another event that is worth in 1982, Peter D. Lax was the publication of the report, which was sponsored by the US Department and National Scientific Foundation. The Lax report as was said that emphasized the need for initiatives and coordinated national attention in the field of high-performance computing in the US.

 Instant response to Lux report was established NSF Supercomputing Centers. The other centers were John Von Newman Center, National Center for Super Composing Applications, San Diego Supercomputing Center, Pittsburgh Surprising Center and Cornell Theory Center. These institutions were actually able to provide students computing time on supercomputers, training them and also help in the development of software package.

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