how to turn off casio calculator

To turn off a Casio calculator, press the Shift key followed by the AC (All Clear) key. The off function is usually a secondary function printed above the AC key, so pressing Shift + AC will power off the calculator. This method applies to models like the Casio fx-83GT CW and others with a similar key layout. Some calculators also turn off automatically after a period of inactivity (about 10 minutes).