Language H

Language H
Paradigm	procedural
First appeared	1962
Influenced by
	COBOL

Language H is a proprietary, procedural programming language created by NCR based on COBOL. The first compiler was developed in August 1962 to run on the National-Elliott 405M and produce object code for the National-Elliott 803B.^[1] It is believed that the "H" stands for John C Harwell.^[2]

Syntax

Language H programs consist of a heading section followed by sets of statements called "chapters." Comments are introduced and terminated by asterisks. It has 84 reserved keywords.^[3] Some of them are:^[4]

READ, PRINT, PUNCH, NUMBER, MAX, BEING, FROM, CHANNEL, DIGIT, STERLING, CHARACTERS, UP, TO, RADICES, QUANTITY, DECIMAL, POINT, INADMISSIBLE, INPUT, CONTROL, ERROR, SEEN-CHARACTER, OPERAND, CALCULATE, HOLD, OFF, ON, SEE, AT, POSITION, PLACES, FILE, GET, AGAIN, WITH, FINISH, REEL-END, UNOBTAINABLE, END-OF-FILE, MARKER, BRANCH, OR, GET-AGAIN, ACCORDING, SEQUENTIAL, FILING, DUMP, DATA, PROCESSING, PROGRAM, FOR, CHAPTER, NOTE, IN, OBEY, AND, ARE, AT, BY, IN, IS

References

^ Cormack, A.S. (November 1, 1962). "Early Operating Experience with Language H". The Computer Journal. 5 (3).
^ Lavington, Simon (2011). Moving Targets: Elliott-Automation and the Dawn of the Computer Age in Britain. Springer. ISBN 978-1848829329.
^ http://www.thecorememory.com/NCR_Language_H.pdf
^ "Resurrection" (PDF). The Journal of the Computer Conservation Society. 82: 43. Summer 2018.

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[1] Cormack, A.S. (November 1, 1962). "Early Operating Experience with Language H". The Computer Journal. 5 (3).

[2] Lavington, Simon (2011). Moving Targets: Elliott-Automation and the Dawn of the Computer Age in Britain. Springer. ISBN 978-1848829329.

[3] ttp://www.thecorememory.com/NCR_Language_H.pdf

[4] "Resurrection" (PDF). The Journal of the Computer Conservation Society. 82: 43. Summer 2018.

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