Texas Instruments TI-53
The Texas Instruments TI-53 is a programmable calculator with 8 digits precision and algebraic logic. It has 40 keys, and an LCD (liquid crystal) display. The power source is 2xLR44. The calculator was manufactured in Italy.
Facts at a glance:
If you have a Texas Instruments TI-53 that is no longer working, you can first try replacing the 2xLR44 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: