Brand: | TRIUMPH (TRIUMPH-ADLER) |
Model: | 81S / EC 24A |
Type: | Calculator |
Picture: |
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Batteries: | AAA x 4 |
Lifetime: |
Introduced: 1975 Terminated: unknown |
Notes: |
Almost identical to the TRIUMPH 81C
but with square roots, a key to swap the X and Y side of a calculation
and the constant π.
![]() Just like the TRIUMPH 81C, every key has its own spring. This calculator was equipped with the battery pack shown on the right. It fits exactly in place of four AAA batteries. It is sealed quite good, but I took it out and took it to recycling to be on the safe side. |
©2023 Ernst Mulder