ANITA 1011
Power supply - AC mains.
Display is 10 digits, Nixie tubes.
4-function, %, memory, uses RPN (Reverse Polish Notation).
Mainly uses transistors, but has 5 integrated circuits made by Marconi-Elliott Microelectronics using "MOST" (Metal-Oxide Semiconductor Transistor) technology.
265 x 335 x 172 mm (10.4" x 13.25" x 6.75").
Introduced 1969, circuit boards on this example date stamped mid-1970.
Made in England by Sumlock Anita Electronics Ltd, distributed by Sumlock Comptometer Ltd.
Marconi-Elliot Microelectronics was closed down in July 1971 by GEC (the British General Electric Company) during one of the periodic industry downturns.
The whole of the British commodity semiconductor industry was to meet a similar fate.
For more information on the ANITA family of calculators click here go to the associated ANITA Calculator site.
John Wolff in his Web Museum has interesting photographs of a 1011 with earlier types of circuit boards and components.
Sales brochure for the ANITA 1011 (pdf format, courtesy of Matthew Mawson).
Text & photographs copyright, except where stated otherwise, © Nigel Tout 2000-2025.
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