A Tour of Company Sites

Rockwell-Anita Calculators
Rockwell-Anita 1216

Rockwell-Anita 1216

Rockwell Anita 1216.

Power supply - AC.

Display is 12 digits, amber gas discharge.

4-function, %, memory.

Integrated circuits - Electronic Arrays EA7022 and EA7023, here date coded 1973.

256 mm x 193 mm x 70 mm (10.0" x 7.6" x 2.75").

"Made in U.S.A"
"Rockwell International. Sumlock Anita Ltd. Uxbridge England"
Circuit board has the name of the Cherry company on it.


This Rockwell-Anita calculator is unusual for two reasons:

  • It is the only calculator known with the Rockwell name on it that does not use Rockwell integrated circuits, instead using those from Electronic Arrays, which was a competitor of Rockwell.
  • It is the only known desktop calculator with the Anita name not made in the U.K.

This may be explained if the design is from just before Rockwell bought Sumlock Anita Ltd. in 1973, when Sumlock-Anita's previous integrated circuit supplier, Marconi-Elliott, had exited the market.
It is reported that this calculator is similar to the Summit S1219, from Summit International Corp, Salt Lake City, Utah, U.S.A. (see http://www.elektron.net/album/Summit/slides/00151_1.html) It could well have been that Summit was contracted by Sumlock-Anita to supply this model, and it was continued for some time after Rockwell bought Sumlock-Anita. If you have further information about this calculator please get in touch.

Cover removed

The cover has been removed to reveal the gas-discharge display, at the rear, the two integrated circuits made by Electronic Arrays.

EA chips

The rear of the circuit board with the Electronic Arrays integrated circuit: EA7022 on the right and EA7023 on the left.

EA chips

Close up of the Electronic Arrays integrated circuits.


The label on the rear.

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
The Technology Explained
Operating a Comptometer
Old Sterling Currency, £sd
Update Information
Getting in touch

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Text & photographs copyright © 2002 - 2009 Nigel Tout, except where noted otherwise.