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Singer/Friden 1150 Desktop Printing Calculator

Friden 1150 Advertisement
February, 1969

Friden's first printing electronic calculator, and the first printing electronic calculator to use logic implemented fully with integrated circuits. Small-scale DTL and TTL integrated circuits, with custom developed Texas Instruments medium-scale TTL counter ICs implementing Friden's "three-counter" calculating architecture carried over from the first-generation EC-130 and EC-132 electronic calculators. The 1150 used Friden's tried-and-true magnetostrictive delay line technology for working register storage. Printing was performed by a unique Friden-developed 37 character per second serial print mechanism.

See the Old Calculator Museum exhibit on the slightly later, but very similar Singer/Friden 1152 for more information.