Faber-Castell TRX

The Faber-Castell TRX is an arithmetic calculator with 8 digits precision and algebraic logic. It has 5 functions, 20 keys, and an LED (light-emitting diode) display, typical of calculators of this era. The power source is 2xAAA. Note: Combination slide rule and calculator.

Facts at a glance:

Feature Value
Type: Arithmetic
Functions: 5
Keys: 20
Precision: 8
Logic: Algebraic
Display type: LED
Length: 58mm
Width: 172mm
Thickness: 15mm
Power Source: 2xAAA
Year introduced: 1974
YearDiscontinued: 1974

See other calculators by Faber-Castell