Calculator key description:

M +: put the currently displayed value in the memory, which is the calculation result and adds the stored number,

(If there is no "M" mark on the screen, that is, there is no data in the memory, the display value is directly stored in the memory).

M-: subtracts the current display value from the memory content, which is the calculation result and subtracts the stored number.

Remove the current result. If there is no number in the memory, press M-to store the negative display number.

MS: stores the displayed content in the memory, and the original data in the memory is washed away.

MR: press this key to call the memory content, indicating that the value in the memory is read to the screen.

Participate in the operation for the current value.

MC: clear the memory content when pressed (the screen "M" flag is eliminated).

MRC: Pressing this key for the first time will call the memory content, and clearing the memory content for the second time.

GT:GT = Grand Total means the sum of the Total numbers, that is, all the numbers obtained after the equal sign are

after the cumulative sum is added, it is transferred to the GT storage register. Press GT to display the cumulative count, and press again to clear.

MU(Mark-up and Mark-down): press this key to calculate the interest rate and tax rate. For more information, see

example 3;

CE: Clear the input key. Pressing this key during digital input will clear the value in the input register and

"0" is displayed and can be re-entered;

AC: clears all data results and operators.

ON/C: Power-ON/ALLKLEAR key. Press this key to indicate power-ON or clear the values in all registers.