Rockwell ANITA 1216.
Power supply - AC.
Display is 12 digits, Burroughs 'Panaplex' 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, see below.
Introduced in late 1973.
This Rockwell-Anita calculator is unusual for two reasons:
This can be explained by the following report in the journal 'Electronics' in August 1973:
"Cherry is private-labelling calculators. . .
Cherry Electrical Products Corp., Waukegan, Ill., has eased its way into calculator manufacturing and is now producing private-label units for Unicom, SCM, Summit, and Olympia. The company, a major switch maker, moved into keyboard manufacture before making the jump into calculator assembly, a $6 million business which is expected to raise sales by 40% next year to over $24 million."
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. Very similar-looking calculators under the Unicom, Olympia, SCM (Smith, Corona, Marchant), and Summit labels are known.
See also the Rockwell-ANITA 102 hand-held calculator and its similarity to the Unicom 102.
The cover has been removed to reveal the Burroughs 'Panaplex' gas-discharge display and, at the rear, the two integrated circuits made by Electronic Arrays.
The rear of the circuit board with the Electronic Arrays integrated circuit: EA7022 on the right and EA7023 on the left.
Close up of the Electronic Arrays integrated circuits.
The journal 'Electronic Design' reported in January 1973:
"Calculator system on two ICs
Two MOS circuits contain all the calculating logic, the clock, and a good portion of the interface circuitry of a 12-digit, four-function memory calculator. Called the EA7022 (in a 28-lead DIP) and the EA7023 (in a 40-lead DIP), the two packages make up the EA S129 set. They include an arithmetic/algebraic processor with 12-digit entry and display capacity, an accumulator memory, the keyboard scanning and display control logic, an internal clock generator, and power-on clearing circuitry."
The label on the rear.
ANITA 1216 DISPLAY CALCULATOR
The new Anita 1216 is a versatile, low-cost calculator from Sumlock. The unit includes memory; automatic chaining; automatic decimal system; constant, percent and exchange keys. The display is a big, easy-to-read
12-column Panaplex system.
Individual problems can be worked and accumulated in the independent memory register, while the 12-column capacity coupled with advanced float in/fixed out decimal system and underflow ensure that Anita 1216 can tackle everyday calculations with ease. Mixed calculations (e.g. 2 x 3 + 4) are carried out in a single continuous flow operation.
The percent key permits entering percentage as a whole number while giving decimally correct answers. The exchange key permits recall of last entry to display as well as avoiding the need for manual re-entry when exchanging divisors and dividends.
Text & photographs copyright © 2002 - 2022 Nigel Tout, except where noted otherwise.