Fourth Generation (1972-1984)

The next generation of computer systems used the large scale integration (LSI -1000 devices per chip) and very large scale integration (VLSI - 100,000 devices perchip) in the creation of computing elements. At this rate entire processors will fit on a  single  chip,  and  for  simple  systems  the  whole  computer  (processor,  main memory and I/O controllers) can fit onto one chip. Gate delays dropped to around1ns per gate.

Developments in software include very high level languages such as FP (functionalprogramming) and Prolog (programming in logic) started.  These  languages  lean  to  use  a declarative programming  style  as  in contrast  to  the imperative style  of  Pascal,  FORTRAN, C,  et  al. 

 

Posted Date: 8/31/2013 2:01:07 AM | Location : United States

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