Singer/Friden 1150 Desktop Printing Calculator
Friden 1150 Advertisement
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
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
Old Calculator Museum
exhibit on the slightly later, but very similar
for more information.