Royal Digital IV
The Royal Digital IV is an arithmetic calculator with 8 digits precision and algebraic logic. It has 5 functions, 18 keys, and an LED (light-emitting diode) display, typical of calculators of this era. The power source is 6xAA sealed. Note: Uses circuit board contacts and electrical stylus, like the Stylophone electronic organ.
Facts at a glance:
|Power Source||6xAA sealed|
If you have a Royal Digital IV that is no longer working, you can first try replacing the 6xAA sealed 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: