Royal 12HTA (Royal Litton 12HTA)
The Royal 12HTA is a scientific calculator with 8 digits precision and algebraic logic. It has 25 functions, 37 keys, and a VFD (vacuum fluorescent) display. The power source is 4x1.5V cell.
Facts at a glance:
|Power Source||4x1.5V cell|
If you have a Royal 12HTA that is no longer working, you can first try replacing the 4x1.5V cell batteries. If that doesn't solve the problem, then you can consider replacing the calculator with a modern equivalent. We suggest the following current model as a replacement: