ANITA Desk Calculators Using LSI Integrated
Power supply - AC mains.
12 digits display using "Nixie"-type tubes.
4-functions, %, square root, 3 memories. Uses normal algebraic logic, not RPN (Reverse Polish Notation) as on most of the other calculators of this series.
Uses LSI (Large Scale Integration) integrated circuits manufactured by Rockwell. Rockwell 10562PA, 10177PA, 10178PA, 10179PB, 10180PA, 15003PC (here all date coded to late 1971 or mid-1972), & 40 transistors.
Introduced in 1972.
Made in England by Sumlock Anita Electronics Ltd, distributed by Sumlock Comptometer Ltd.
Inside, showing the 12 "Nixie-type" display tubes.
Underneath the keyboard are the three main circuit boards.
The circuit boards separated.
The main processing board with six Rockwell integrated circuits.
The Keyboard Interface board.
The Decode board.
Advertisement for ANITA 1233P (Printing version) and 1233D (Display version), from April 1973.
Sales brochure for the ANITA 1233D (pdf format, courtesy of Matthew Mawson).
Anita Desk Calculators Using LSI Integrated Circuits
Text & photographs copyright © 2002 - 2021 Nigel Tout, except where noted otherwise.