Texas Instruments TI-503 PLUS
The Texas Instruments TI-503 PLUS is an arithmetic calculator with 8 digits precision and algebraic logic. It has 6 functions, 23 keys, and an LCD (liquid crystal) display. The power source is LR54. The calculator was manufactured in China.
Facts at a glance:
If you have a Texas Instruments TI-503 PLUS that is no longer working, you can first try replacing the LR54 battery. 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: