Casio 121-A (121A)
The Casio 121-A is an arithmetic calculator with 12 digits precision and algebraic logic. It has 4 functions, 15 keys, and a display using Nixie tubes. The power source is Solar. Note: Desktop model.
Facts at a glance:
If you have a Casio 121-A that is no longer working, you can consider replacing the calculator with a modern equivalent. We suggest the following current models as possible replacements: