Fourth Generation Computer Architectures.

Abstract

The architecture of the computer central processor holds the key to increasing speed of operation after electronic transmission lines rates become a limiting factor. The serial processor was the first and simplest type of central processor, and although many of today's machines appear to have their own unique architectures, their processors are, in most cases, only combinations of three architectural types: (1) concurrent; (2) parallel; and (3) pipeline. The Texas Instruments Advanced Scientific Computer (TI-ASC) can be configured to form up to four parallel arithmetic pipelines with each pipeline constructed of eight segments. It has a cycle time of 80 ns. The CRAY Research CRAY-1 is a concurrent pipeline computer with 12 independent functional units. It has a cycle time of 12.5 ns. The Control Data STAR-100 is also a concurrent pipeline computer which operates upon string and arrays of data. It has a cycle time of 40 ns. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1978
Accession Number
ADA060670

Entities

People

  • Gerald W. Brezina

Organizations

  • Air Force Research Laboratory

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Access Time
  • Air Force
  • Air Force Facilities
  • Arithmetic Units
  • Central Processing Units
  • Computer Access Control
  • Computer Architecture
  • Computer Programming
  • Computer Programs
  • Computers
  • Computing System Architectures
  • Data Transmission
  • Floating Point Operations
  • Instruction Set Architecture
  • Operating Systems
  • Parallel Processors
  • Serial Processors

Readers

  • Computer Science/Computer Engineering/Data Science/Digital Signal Processing.
  • Marine Ecotoxicology

Technology Areas

  • Microelectronics