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Loopstra X1 Notes
Bram J Loopstra's X1 Colloquium-Cambridge Notes
For a more detailed
description click on
Bram J Loopstra and Carel S. Scholtenare are widely regarded as the Designers of the Electrologica X1 Computer.
These are the handwritten notes Mr Loopstra used for reference when he gave a talk in Cambridge, about
the newly completed X1 Computer.
The X1 Computer first went into production in the Netherlands in 1958 and had a production run of
approximately 30 to 40 units between 1958 and 1965.
It's use of innovative Transistorised Circuitry was at the leading edge of computer design back in the late fifties, so
any lecture giving an incite into the construction and computer architectural techniques of the X1, would have
been very well received.
The X1 computer also has the distinction of being the first computer to use the Algol 60
The hand written notes are in Dutch and are dated 27 November 1958.
The Colloquium Talk was published in “Vol 2 Issue 1” (1959) of “The Computer Journal” and
is available free online through their website. “Link”