## CalculatorsGives a history of calculators and provides information on operating simple models. |

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### Contents

2078 S666 RNEGIE BRANCH | 10 |

Napiers rods | 18 |

The Display | 24 |

Copyright | |

6 other sections not shown

### Common terms and phrases

49 cents ABACUS addition and subtraction answer 32 ANSWER YOU WANT bracket keys calculation 14 calculator display CALCULATOR HANGMAN calculator round calculator to figure calculator to find clear everything clear key clear your calculator CLEARING THE CALCULATOR CONSTANT KEY correct answer count decimal point different starting number digit key display give display shows divisor electronic calculator ESTIMATING AND CHECKING example figure the answer final zeros FINDING REMAINDERS FINDING fraction GETTING THE ANSWER gives the answer grapefruit KEY HOPPING last number list of numbers mathematician memory keys middle numbers move the decimal multiply and divide MULTIPLYING DECIMALS need to key NON-ELECTRONIC CALCULATORS number of digits number or operation numbers that recur pair Pinball players pocket calculator ready reckoner recurring decimal REMAINDERS FINDING REMAINDERS Rosalie running total scientific calculator sequence of numbers simple slide rule SMALL NUMBERS Take turns pressing two-digit number whole number wipeout Wordsums write