Keystone SC 656
The Keystone SC 656 is a scientific calculator with algebraic logic. It has 18 functions, 30 keys, and an LED (light-emitting diode) display, typical of calculators of this era. The power source is Sealed battery pack.
Facts at a glance:
|Power Source||Sealed battery pack|
If you have a Keystone SC 656 that is no longer working, you can consider replacing the calculator with a modern equivalent. We suggest the following current model as a replacement: