Introduction

Anita Desk Calculators using both Transistor Logic & Integrated Circuits
Anita 1020
Anita 1020 calculator

Anita 1020

Power supply - AC mains.

Display is 10 digits, Nixie tubes.

4-function, %, storage, square root, uses RPN (Reverse Polish Notation).

Uses a combination of transistors and integrated circuits.

265 x 335 x 172 mm (10.4" x 13.25" x 6.75").

Introduced 1970, price £335 Sterling (about US$ 800).

Made in England by Sumlock Anita Electronics Ltd, distributed by Sumlock Comptometer Ltd.
Inside

Inside, from the rear, showing a stack of narrow circuit boards at the back, about five larger upright boards in the middle, and the "Nixie" type display tubes.

The integrated circuits on the nearest board are in 16-pin packages and so are probably SSI (Small-scale integration) or MSI (Medium-scale integration) devices.

If you have further information about the development of Anita calculators, or know of somebody who worked there, please get in touch with me.

Home
Introduction
Origins of Bell Punch Co.
Mechanical Calculator Days
National Calculating Service
Development of Anita 1
Development of Anita 2
Anita is Launched
At work with Anita
All Change at Bell Punch
Anita Developed Further
Anita at its Zenith
The Rockwell Connection
Demise of Anita & Bell Punch
Mechanical Calculators
Early Anita Desktop Calculators
Transistors & Integrated Circuits
Anita LSI Desk Calculators
Anita Hand-held Calculators
Rockwell-Anita Calculators
Calculators made by others
Advertisements & Brochures
Operating Manuals & Materials
Company Information
A Tour of Company Sites
Summary
The Technology Explained
Operating a Comptometer
Old Sterling Currency, £sd
Links
Update Information
Getting in touch

Anita Desk Calculators using both Transistor Logic & Integrated Circuits
1000
1010
1011
1011P
1020
1021

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Text & photographs copyright © 2002 - 2008 Nigel Tout, except where noted otherwise.