Texas Instruments TI-503SV
The Texas Instruments TI-503SV is an arithmetic calculator with 8 digits precision and algebraic logic. It has 7 functions, 24 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-503SV that is no longer working, you can first try replacing the LR54 battery. If that doesn't solve the problem, then it's probably easiest to just buy a new one, as this model is still currently available.