From 1968 to around 1975 the terms and definition used for what we now call a microprocessor varied greatly.  Most people did not differentiate between CPU, Arithmetic Unit, Microcomputer or Microprocessor. In fact, for many years the Intel 4004 was called the CPU of the chip set which consisted of the 4001, 4002, 4003, 4004. It was not a single-chip system.  Today it is herald as a microprocessor. Marketing gets in the way of technical excellence sometimes.  The first known published definition of a microprocessor (called a CPU chip set in 1973 is the following).  This was FIVE years after the F-14 design.

1973 from Hank Smith, Microprocessor Marketing Manager, Intel Corp.

IEEE 1973 WESCON Professional Program Session 11 Proceedings

“A CPU uses P-channel MOS and is contained in 1, 2, 3 or 4 LSI standard dual-in-line packages from 16 – 42 pins per package”.

“Architecture Of A Microprocessor” by Ray M. Holt original date: January 1971


All Pages 1-26 [Word] [PDF] all pages are scanned images of the original paper

This is a scanned copy of the original paper written by Mr. Ray Holt in 1971. This paper was submitted and accepted for publication by Computer Design magazine in 1971, however, because of security reasons the U.S. Navy and his employer, Garrett AiResearch, would not approved the release of the information. It was finally released on April 21, 1998 by authority of the US Navy.

“LSI Technology State of the Art in 1968” by Ray M. Holt updated: September 22, 1998 [Word] [PDF]

This paper was first written in early 1998 to be a resource for the reader and reviewer of the “Architecture Of A Microprocessor” paper as to the state-of-the-art in computer architecture and LSI technology in 1968. This paper will be updated as further information is uncovered. The majority of this paper was written from resource material Mr. Ray Holt saved from the F14 first microprocessor project.

“F14 TomCat MOS-LSI Chip Set”by Ray M. Holt 2013 A Powerpoint Presentation Slide Show file

(PowerPoint – 6.1MB)

This PowerPoint presentation was given in 2013 at Cal Poly University in Pomona, CA. Some design details and specifications presented here are currently not available in any other document. This file will be updated as further presentations are made. Your comments and suggestions are always welcome.

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