The CE key functions on the calculator are "Cancel" and "Exit". When you enter an incorrect number or operator on the calculator, pressing the CE key cancels the number or operator and returns it to the previous value, allowing you to re-enter it. In addition, if you want to exit the calculator program, you can also press the CE key.
Here are some examples of using the CE key on a calculator:
1.Use the CE key when typing the wrong one: If you enter a wrong number or operator on the calculator, such as 2*3=8, you can press the CE key to cancel the "8" and re-enter the correct result.
2.Cancel extra numbers or operators: If you have entered extra numbers or operators on the calculator, such as 2+3*4+5, you can press the CE key to cancel the "+" and re-enter the correct operator.
3.Quick Deletion of Wrong Inputs: If you have entered a wrong number or operator on the calculator and you want to quickly delete it, you can press the CE key and then enter the correct number or operator. This removes the previous incorrect input and replaces it with the correct one.
4.Quick return to the previous action: If you have performed multiple actions on the calculator and you want to go back to the previous operation, you can press the CE key and enter the correct number or operator. This cancels the current operation and returns the calculator to the state of the previous operation.
In conclusion, the CE key on the calculator is a very useful feature that allows you to quickly cancel previous incorrect entries and re-enter the correct value, or quickly exit the calculator program. While you are using the calculator, remember to use the CE key at any time to correct the error or exit the program.