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Rockwell-Anita Calculators
Rockwell 30R "Slide Rule Memory"
Rockwell 31R

Rockwell 30R "Slide Rule Memory".

9v (PP3).

Display is 8 digits, red LED.

4 function, %, memory, square, square root.

The main chip is a Rockwell A4612PA here date coded late 1974.

76 x 153 x 23 mm (3.0" x 6.0" x 0.9").

Made in Great Britain, at the former Sumlock-Anita factory in Portsmouth.
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Development of Anita 1
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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
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A Tour of Company Sites
Summary
The Technology Explained
Operating a Comptometer
Old Sterling Currency, £sd
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Getting in touch

Rockwell-Anita Calculators
811 SL
1211
1211 SL
1211P
1216
102
201
202/SR
Rockwell 20R
Rockwell 21R
Rockwell 30R

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