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Small self-powered electronic instrument used to automatically make numerical calculations.
Key used to display the results of operations carried out.
change sign key
Key used to change the plus or minus sign of the displayed number.
subtract from memory
Key used to erase the displayed number from memory.
add in memory
Key used to save the displayed number in memory.
Key used to return the pocket calculator to zero.
Key used to calculate the quotient of two numbers.
Key used to erase the last number entered.
square root key
Key used to derive the square root of a number; this is the number that is multiplied by itself to give the basic number.
Key used to calculate the product of two numbers.
Key used to insert a decimal symbol to separate the whole and fraction parts of a number.
Key used to calculate the difference between two numbers.
Key used to enter a number.
Button that erases data stored in memory.
Button that displays data stored in memory.
Liquid crystal display that shows the last number entered or the result of operations carried out.
Device that converts sunlight into electric current to power a pocket calculator.
structure of the Sun 
Key used to obtain the decimal form of a displayed number by dividing it by 100; it is used mainly to calculate percentages.
Key used to add two numbers.
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