Brand: SHARP
Model: EL-503
Type: Scientific calculator
Picture: SHARP EL-503
Batteries: AA x 2
Lifetime: Introduced: 1979
Terminated: unknown
Notes: Small LCD calculator with the basic scientific functions and memory.

The LCD of this calculator is rather slow. And what makes it more difficult to work with this calculator is the fact that the LCD is off when a key is pressed.

The display has indicators for radians and gradients. There's no indicator for memory.

An erroneous operation is indicated by 8 zeroes in the display.