| Brand: | BRAUN |
| Model: | 4769 (ET90) |
| Type: | Calculator |
| Picture: |
|
| 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! |
©2025 Ernst Mulder