My Sharp COMPET QS-2770A calculator is rounding off at total. How do I stop that? It just began doing that recently.

SOURCE: Have a Sharp Compet CS-2790 calculator. How do I change the

I work for the state and cannot incur a charge. Sorry for posting my question. The problem is still not fixed. Was trying to help someone else that has the calculator.

SOURCE: I don't have manual for

You can download the manual from the manufacturer's web site at
http://files.sharpusa.com/Downloads/ForHome/HomeOffice/Calculators/Manuals/cal_man_QS_1760.pdf


http://files.sharpusa.com/Downloads/ForHome/HomeOffice/
Calculators/Manuals/cal_man_QS_1760.pdf

SOURCE: My sharp compet qs-2770h calculator will not let me type in numbers. There is no reset button but there is sequence of keys to press. I cannot remember them. Does anyone???

In some rare occasions, all keys - including the power
key and the key - cease to respond.
If such abnormal conditions are observed, unplug the AC cord from the socket. Keep the unit unplugged for about 5 seconds, reconnect the AC plug, then turn on the power