Students calculator the meaning of each key

1.Power-on on button: Press this key to power on, or clear all registers.

2.Clear key (c): During digital input, pressing this key for the first time will clear all values except the contents of the memory.

3.Clear Input Key (CE): Pressing this key during digital input will clear the value in the input register and display it"0".

4.Square Root : Displays a square root with a positive input number.

5.m+: puts the currently displayed value in memory; Interrupt the digital input.

6.m-: subtract the current display value from the memory contents; Interrupt the digital input.

7.MRC: The first press of this key will recall the memory contents, and the second press will clear the memory contents.

8.mr: Calls the contents of the memory.

9.mc: Clear the memory contents.

10.GT: Press the GT key to transfer the contents of the GT memory register to the display register; Press the AC or C key to remove the GT display flag.

11.MU (Mark-Up and Mark-Down keys): Press this key to complete the calculation of interest rates and tax rates.

12.MRC: The first press of this key will recall the memory contents, and the second press will clear the memory contents.

13.mr: Calls the contents of the memory.

14.mc: Clear the memory contents.

15.GT: Press the GT key to transfer the contents of the GT memory register to the display register; Press the AC or C key to remove the GT display flag.

16.MU (Mark-Up and Mark-Down keys): Press this key to complete the calculation of interest rates and tax rates. comp stands for Basic Operations.

SD stands for Standard Deviation.

reg refers to the regression line solution (lin is a logarithmic regression line with e as the base) (log is a regression line with 10 as the base) (exp does not understand) (pwr does not understand) (inv does not understand) (quad is a parabola).

deg is in the angle"degrees"meaning.

rad is in the angle"Radians"meaning.

gra is in the angle"Gradients"meaning.

fix refers to the number of decimal places to be kept.

SCI stands for Scientific Notation Reserved Digits.

norm refers to the regular mode (which is useless).

The DISP is a fractional blank form (with a band fraction (ab c) and a sham fraction (d c)).

dot and comma are modes of decimal points.

Is it a scientific calculator? There should be instructions.

Elementary school student calculator key meaning

ON off: Power on/off key Function: Press this key to turn the power on or off.

mc) Amnestic Key Function: Clear Stored Values.

mr) Memory Recovery Key Function: Take out the stored value.

m-) Memory Subtraction Key Function: Subtract the current displayed value from the stored value and save it.

m+) Memory Addition Key Function: Put the currently displayed value in the memory, interrupting the digital input.

0-9) 0-9 character key Function: The buttons are 0-9 character keys for entering numbers.

Decimal point character key Function: The button is used to enter the decimal point.

Positive and negative key function: The button is used to convert the positive and negative of the current value.

Open square key function: Find the square root.

Percent key function: Find percentages.

Backspace Function: Provides a backspace function.

c) Clear key function which serves hail: button to clear the input just now.

Confirm key Function: Confirm the calculation result.

ac) Clear All Key Function: Clear all data results and operators.

CE) Clear Input Key function: Clears the value in the existing register and displays it"0".Data re-entry.

MRC) Memory Recovery or Clear Key Function: Clear Memory Numbers (Selective, some calculators clear when the screen shows Talk God 0, and replace other numbers when displaying other numbers, that is, replace the screen numbers directly with memory).

How to use: There are two types of calculators: standard type and scientific type, of which the standard type can be used as follows:

1. When typing a number, press the corresponding number key, if you press the wrong (CE) key to remove a value, and then re-enter the correct number.

2. After entering the number directly, press the multiplier sign to turn it into a multiplier, and press the (=) key directly without entering the multiplier, which is the quadratic value of the number.

3. The root number ( ) key is to open the quadratic root by default, and only the scientific calculator can open the square root multiple times.

4. Press ( + button Li Fan to change the positive and negative values of the number.

What kind of calculator are you talking about? A simple calculator for daily accounting? Or a scientific calculator? Or a more advanced calculator?

Let's take a simple calculator as an example:

Dress Bi : Numeric input key.

- Addition, subtraction, multiplication and division of four key operations.

Get the result key.

on: power on button.

off: the shutdown button.

ac: Clear all.

ce: error correction key.

gt: Cumulative sum key (each time you press the = key, the result displayed on the current screen is stored in memory and added to the previously saved result).

m+, m-: memory operation is missing chain (the current screen data is stored in the memory of the memory operation imitation Sun arithmetic memory, if the m- key is pressed, the opposite number of the screen display is stored).

mc: Amnestics (deletion of data saved by mnemonics).

mr: Recall memory (take out the data of the memory operation).

Square root operation.

Percentages.

Backspace. : plus or minus.

"ON C" key - opens the calculator and eliminates the values and calculation instructions on the state display.

off" – closes the calculator.

2ndf" key – indicates that the (second) function is selected.

del" key – to clear a number. For example, if you want to enter "9873" and find that it is mistyped as "9875", press the "del" key, clear the "5" on the single digit, and then press the number key "3".

ON C – To clear all 9873, press the ON C key.

sto" "M+" key – storage key.

"rcl" key and "m+" key – to call up the stored data.

"Keys and so on - the operator symbol key, the sock car and the sail Sun equal sign key, the parenthetical key. If there are middle and small parentheses in the mixed operation of integers and decimals, press the parenthesis key twice.

It is called the operation function key. A calculator generally consists of a combinator, controller, memory, keyboard, display, power supply and some optional peripherals and electronic accessories, either manually or mechanically. The combinator and controller of the low-grade calculator are simple serial operations by digital logic circuits, and their random access memory is only.

One or two units for cumulative storage.

1. Mechanical calculator.

A mechanical calculator is a calculator that uses a physical keyboard to input numbers and operation symbols, and uses mechanical parts to calculate. Before the advent of electronic calculators, mechanical calculators were always the first choice for calculations. However, a certain failure rate led to the improvement and invention of electronic calculators.

2. Electronic calculator.

In the past, some calculators were as big as today's computers, and the first mechanical calculator was a desktop mechanical device, but it was soon replaced by a desktop electromechanical calculator, and then it was replaced by vacuum tubes, transistors, integrated circuit logic circuits and other materials. Most of today's calculators are handheld microelectronic devices.

What kind of calculator are you talking about? A simple calculator for daily accounting? Or a scientific calculator? Or a more advanced calculator?

Let's take a simple calculator as an example:

Numeric input keys +, - addition, subtraction, multiplication and division four operation keys.

Get the result key.

on: power on button.

off: the shutdown button.

ac: Clear all.

ce: error correction key.

gt: Cumulative sum key (each time you press the = key, the result displayed on the current screen is stored in memory and added to the previously saved result).

M+, M-: memory operation (the current screen data is stored in the memory operation memory, if the M- key is pressed, the opposite number of the screen display is stored).

mc: Amnestics (deletion of data saved by mnemonics).

mr: Recall memory (take out the data of the memory operation).

Square root operation.

Percentages.

Backspace. : plus or minus.

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