The Electrologica X1 was a digital computer designed and manufactured in the Netherlands from 1958 to 1965.[1] About thirty were produced and sold in the Netherlands and abroad.[2]
The X1 was designed by the Mathematical Centre in Amsterdam, an academic organization that had been involved in computer design since 1947, and manufactured by Electrologica NV,[3] a company formed expressly for the purpose of producing the machine.
The X1 was a solid-state binary computer ("completely transistorized"[1]) with magnetic core memory. Word-length was 27 bits and peripherals included punched and magnetic tape.[1] It was one of the first European computers to have an interrupt facility.
The X1 was the subject of Edsger Dijkstra's Ph.D. dissertation,[4] and the target of the first complete working ALGOL 60 compiler, completed by Dijkstra and Jaap Zonneveld.[5] In 1965, the X1 was superseded by the X8. Electrologica was taken over by Philips a few years later.[1]
^ abcdThe Electrologica X1 and X8 computers
^Gerard Alberts; Jan Friso Groote, eds. (2023). Tales of Electrologica: Computers, Software and People. Germany: Springer. p. 40. Retrieved 8 February 2024.
^"COMPUTERS, OVERSEAS: 2. N. V. Electrologica, Amsterdam, Holland". Digital Computer Newsletter. 9 (3): 15–16. Jul 1957.
"COMPUTERS AND CENTERS, OVERSEAS: 9. N. V. Electrologica, X 1, Amsterdam, Holland". Digital Computer Newsletter. 11 (2): 18–19. Apr 1959.
^Cite error: The named reference Dijkstra thesis was invoked but never defined (see the help page).
^"The Dijkstra-Zonneveld ALGOL 60 compiler for the Electrologica X1" (PDF). Archived from the original (PDF) on 2016-03-04. Retrieved 2015-08-18.
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