Harvard Mark IV explained

Harvard Mark IV
Developer:	Howard Aiken
Manufacturer:	Harvard University
Predecessor:	Harvard Mark III

The Harvard Mark IV was an electronic stored-program computer built by Harvard University under the supervision of Howard Aiken for the United States Air Force. The computer was finished being built in 1952.^[1] It stayed at Harvard, where the Air Force used it extensively.

The Mark IV was all electronic. The Mark IV used magnetic drum and had 200 registers of ferrite magnetic-core memory (one of the first computers to do so). It separated the storage of data and instructions in what is now sometimes referred to as the Harvard architecture although that term was not coined until the 1970s (in the context of microcontrollers).^[2]

See also

• Harvard Mark I
• Harvard Mark II
• Harvard Mark III
• List of vacuum-tube computers

Further reading

• Book: Williams, Michael R. . A History of Computing Technology . 1997 . . 0-8186-7739-2 . none.

External links

• Harvard Mark IV 64-bit Magnetic Shift Register at ComputerHistory.org

See main article: frames.

Notes and References

1. Book: A survey of automatic digital computers. Research. United States Office of Naval. 1953. Office of Naval Research, Dept. of the Navy. 43. en.
2. Pawson . Richard . The Myth of the Harvard Architecture . IEEE Annals of the History of Computing . 30 September 2022 . 44 . 3 . 59–69 . 10.1109/MAHC.2022.3175612 . 252018052 .