Sharp EL-640 (VOICE SYNTHESIZED CLOCK & CALCULATOR)

The Sharp EL-640 is an arithmetic calculator with 8 digits precision and algebraic logic. It has 5 functions, 26 keys, and an LCD (liquid crystal) display. The power source is 4xAA. Note: time

Facts at a glance:

Feature Value
Type: Arithmetic
Functions: 5
Keys: 26
Precision: 8
Logic: Algebraic
Display type: LCD
Length: 154mm
Width: 77mm
Thickness: 20mm
Power Source: 4xAA
Year introduced: 1978

See other calculators by Sharp