What does mc m+ m- mr on the calculator mean?

On the calculator, the full name of mc is Memory Clean, which "returns" the currently memorized number to zero; m is to memorize the current number and "add" it to the accumulated number; m- is to memorize the current number in the form of a negative number. "Add" to the accumulated numbers; 4. The full name of mr is Memory Recall, which presents the currently calculated numbers.

MR: Memory Recall means to present the currently calculated number.

MC: Memory Clean means to "reset" the currently memorized numbers to zero.

M-: Memorize the current number and "add" it to the accumulated number in the form of a negative number. In other words, it means subtracting the current number from the total.

M: Memorize the current number and "add" it to the accumulated number.

Extended information:

For example, when calculating the string of numbers (3x4) (5x9) - (4x7), you can use The M and M- functions quickly separate operations and finally calculate the results.

1. After calculating 3x4=12, press "M" to memorize the current number, and then press C (Clear) to clear it. You will see the word M appear above the computer, which means it has The numbers are memorized.

2. Then calculate 5x9=45, and then press "M" to remember it. At this time, the number "12 45" has been stored in the computer! Then press C again.

3. Then after calculating 4x7=28, press "M-", which means that the number memorized by the computer becomes "12 45 (-28)", and finally press the "MR" key again. The answer is 29.

4. After the calculation is completed, you can click "MC" to delete all the saved data just now.

So when you need to calculate continuously, you no longer need to pick up a pen and paper, write down the numbers and then calculate manually by yourself, it is simple and convenient.

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