Calculators

Section 4.5: History of Calculating Devices

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4.5 Outline

  1. First calculating tool
  2. Early calculating devices
    1. abacus
    2. Napier’s rods
    3. slide rule
  3. Mechanical calculators
    1. Pascal’s calculator
    2. Babbage’s calculating machine
  4. Hand-held calculators
  5. First computers
    1. ENIAC
    2. UNIVAC I
  6. Present-day computers
    1. Cray supercomputer
    2. Tianhe-2 supercomputer
    3. minicomputers
    4. history of the internet
    5. personal computers
… See the whole entry

Section 1.3: Scientific Notation and Estimation

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1.3 Outline

  1. Exponential notation (see below)
    1. base
    2. exponent
    3. power or exponential
    4. extended order of operations
  2. Scientific notation (see below)
  3. Calculators
    1. arithmetic logic
    2. algebraic logic
    3. RPN logic
    4. floating-point form
  4. Estimation
  5. Laws of exponents (see below)
    1. addition law
    2. multiplication law
    3. subtractive law
… See the whole entry