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pocket calculatorclick to hear

Small self-powered electronic instrument used to automatically make numerical calculations.
pocket calculator equals key change sign key subtract from memory add in memory clear key divide key clear-entry key square root key multiply key decimal key subtract key number key memory cancel memory recall display solar cell wallet percent key add key

equals key click to hear

Key used to display the results of operations carried out.

change sign key click to hear

Key used to change the plus or minus sign of the displayed number.

subtract from memory click to hear

Key used to erase the displayed number from memory.

add in memory click to hear

Key used to save the displayed number in memory.

clear key click to hear

Key used to return the pocket calculator to zero.

divide key click to hear

Key used to calculate the quotient of two numbers.

clear-entry key click to hear

Key used to erase the last number entered.

square root key click to hear

Key used to derive the square root of a number; this is the number that is multiplied by itself to give the basic number.

multiply key click to hear

Key used to calculate the product of two numbers.

decimal key click to hear

Key used to insert a decimal symbol to separate the whole and fraction parts of a number.

subtract key click to hear

Key used to calculate the difference between two numbers.

number key click to hear

Key used to enter a number.

memory cancel click to hear

Button that erases data stored in memory.

memory recall click to hear

Button that displays data stored in memory.

display click to hear

Liquid crystal display that shows the last number entered or the result of operations carried out.

solar cell click to hear

Device that converts sunlight into electric current to power a pocket calculator.

wallet click to hear

percent key click to hear

Key used to obtain the decimal form of a displayed number by dividing it by 100; it is used mainly to calculate percentages.

add key click to hear

Key used to add two numbers.