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The Klerer-May System is a programming language developed in the mid-1960s, oriented to numerical scientific programming, whose most notable feature is its two-dimensional syntax based on traditional mathematical notation.
For input and output, the Klerer-May system used a Friden Flexowriter modified to allow half-line motions for subscripts and superscripts. The character set included digits, upper-case letters, subsets of 14 lower-case Latin letters and 18 Greek letters, arithmetic operators (
|) and punctuation (
)), and eight special line-drawing characters (resembling
⁔) used to construct multi-line brackets and symbols for summation, products, roots, and for multi-line division or fractions. The system was intended to be forgiving of input mistakes, and easy to learn; its reference manual was only two pages.
- Klerer, Melvin; May, Jack (1965). "A user oriented programming language". The Computer Journal 8 (2): 103–109. doi:10.1093/comjnl/8.2.103.
- Sammett, Jean (1969). Programming Languages: History and Fundamentals. Prentice-Hall. pp. 284–294. ISBN 0-13-729988-5.
- Klerer, Melvin; May, Jack (1965). Reference Manual. Hudson Labs, Dobbs Ferry, NY: Columbia University.
For further reading
- Klerer, Melvin; May, Jack (May 1964). "An Experiment in a User-oriented Computer System". Commun. ACM 7 (5): 290–294. doi:10.1145/364099.364266.
- Klerer, Melvin; May, Jack (1965). "Proceedings of the November 30--December 1, 1965, Fall Joint Computer Conference, Part I". Fall Joint Computer Conference. Las Vegas, Nevada: ACM. pp. 63–75. doi:10.1145/1463891.1463897.
- Klerer, Melvin; Grossman, Fred (November 1967). "Proceedings of the November 14–16, 1967, Fall Joint Computer Conference". Fall Joint Computer Conference. Anaheim, California: ACM. pp. 675–687. doi:10.1145/1465611.1465701.
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