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:

This can be explained by this model being a Unicom machine relabelled with the ANITA name.  Unicom was the trade name of the calculators manufactured by the semiconductor company American Micro-systems Inc.  Like Sumlock Anita, Unicom was bought by Rockwell in 1972 which continued to manufacture the Unicom models for a time.

A Unicom 1217 calculator that appeared on the eBay auction site in the U.S.A. looks similar to this machine, but with a slightly different key arrangement.  An advertising flyer with it has "Unicom Systems, Rockwell International". and "Those crazy guys from Unicom have done it again!"  The instruction manual for that machine was labelled "Unicom Systems, Rockwell International".

Interestingly, this ANITA 1216 is similar to the Summit S1224 calculator, from Summit International Corp, Salt Lake City, Utah, U.S.A. (see

See also the Rockwell-ANITA 102 hand-held calculator and its similarity to the Unicom 102.

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.

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Text & photographs copyright © 2002 - 2021 Nigel Tout, except where noted otherwise.