Litronix 1740A (checkmate 1740)
The Litronix 1740A is an arithmetic calculator with algebraic logic. It has an LED (light-emitting diode) display, typical of calculators of this era. The power source is 3xAA.
Facts at a glance:
If you have a Litronix 1740A that is no longer working, you can first try replacing the 3xAA 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: