Braun 4769 (ET90)


Brand: Braun
Model: 4769 (ET90)
Type: Calculator
Batteries: CR 2025 x 1
Lifetime: Introduced: unknown
Terminated: unknown
Notes: This Braun calculator is a very well thought out plain function calculator with editable history and memory. Current input can be corrected using the (forward) delete key.

The history function works as follows. When you are working with this calculator, every operand entered gets a line number. To edit any operand in the history the "Lin"-key followed by the line number to be edited and the "Ent"-key, enter a new operand and press the "Ent"-key again to change it. The up and down arrow keys can be used to scroll through the history, to review any past calculations and their results. The history is retained when the calculator is switched off.

This calculator can do normal percentages and also delta percentages (using the "Δ%"-key).

Many thanks to Marco de Gast for donating this calculator to the museum!

Picture:  Braun 4769 picture

©2009 Ernst Mulder