DocumentCode
1337277
Title
The Philips Computer PASCAL
Author
Heijn, H.J. ; Selman, J.C.
Author_Institution
Philips Res. Labs., N. V. Philips´´ Gloeilampenfabrieken, Eindhoven, The Netherlands.
Issue
2
fYear
1961
fDate
6/1/1961 12:00:00 AM
Firstpage
175
Lastpage
183
Abstract
PASCAL is a binary parallel computer with a word length of 42 bits, a clock-pulse repetition time of 1¿ ¿sec, performing, on the average, 60,000 operations per second. Wired-in floating-point facilities are provided. Core storage is backed by a drum and by magnetic tape. There are modification versions for indexing as well as for stepping-up purposes. Special instructions include count and repeat instructions, jumps on the result of an earlier comparison, and two kinds of link instructions for facilitating the use of subroutines and interpretative programs. Transfer instructions enable a simultaneous bidirectional data flow between drum and cores or between tape and cores while computations are going on.
Keywords
Circuits; Clocks; Computer aided instruction; Concurrent computing; Data flow computing; Indexing; Magnetic cores; Plugs; Registers; Switches;
fLanguage
English
Journal_Title
Electronic Computers, IRE Transactions on
Publisher
ieee
ISSN
0367-9950
Type
jour
DOI
10.1109/TEC.1961.5219187
Filename
5219187
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