Language H

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]

Language H
Paradigmprocedural
First appeared1962
Influenced by
COBOL

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]

This list is incomplete; you can help by adding missing items with reliable sources.

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
  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. http://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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