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Hal/S
<language> (Hal/Shuttle) A real-time high-level language
for flight control applications. Hal was developed for NASA
by Intermetrics, Inc. in the 1970s for on-board software.
The initial version was a Fortran preprocessor, written in
Fortran. In 1972, as the space shuttle project advanced, the
language was renamed Hal/S and made more adaptable to
architecture of different computers by using XPL. In all,
11 different implementations, mostly based on IBM 360, were
created. Applications also included projects by JPL
(Galileo probe, Deep Space network).
["Two-Dimensional Characteristics of HAL, A Language for
Spaceflight Applications", J.S. Miller, SIGPLAN Notices 7(10),
Oct 1972].
["Space Station Flight Software: Hal/S or Ada?", Allan
R. Klumpp, "Computer", March 1985].
(2002-07-13)
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Nearby terms:
halftone « HALGOL « HALMAT « Hal/S » Halt and Catch Fire » halting problem » Hamilton
This article was derived from the Free Online Dictionary of Computers and is available under ther terms of the GNU Free Documentation License.
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