Triumph sir (EC 20-S)
The Triumph sir is an arithmetic calculator with 8 digits precision and algebraic logic. It has 5 functions, 19 keys, and a VFD (vacuum fluorescent) display. The power source is 3xAAA. The calculator was manufactured in Japan. Note: Adler Sir
Facts at a glance:
If you have a Triumph sir that is no longer working, you can first try replacing the 3xAAA batteries. If that doesn't solve the problem, then you can consider replacing the calculator with a modern equivalent.
We suggest the following current models as possible replacements: