Prinztronic X15

Description

Brand: Prinztronic
Model: X15
Type: Calculator
Picture: Prinztronic X15
Batteries: 9V x 1
Lifetime: Introduced: 1975
Terminated: 1976
Notes: Plain calculator with an 8-digit LED display and two extra functions that I, even after playing with them for quite some time, couldn’t find the purpose off. Those are the vat and the K keys. They do not make sense, and since I could not find a manual anywhere I am still at a loss. If anyone knows what their purpose is please let me know.

Results are shown left aligned. But when a new number is entered the screen is first filled with eight zeroes and the numbers entered are filled from the right.

This calculator does not mind overflows. No indications whatsoever that a overflow occurred. A division by zero shows a display with some random numbers and running digits.

Peripherals

A power adapter.