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17 Cards in this Set
- Front
- Back
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Number
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A unit belonging to an abstract mathematical system and is subject to specified laws of succession, addition, and multiplication.
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Natural Number
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The number 0 or any number obtained by repeatedly adding 1 to this number. The counting numbers.
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Negative Number
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Less than zero and is opposite in sign to a positive number.
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Integer
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Any of the natural numbers or any of the negative numbers.
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Rational Number
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An integer or the quotient of two integers (any value that can be expressed as a fraction).
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Base of a Number System
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Specifies the number of digits used in the system. Or:
The foundational value of a number system, which dictates the number of digits and the value of the digit positions. |
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Properties of Digits
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Always start with 0 and continue through one less than the base.
Example: 2 digits in base 2, 0 and 1. |
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Positional Notation
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A system of expressing numbers in which the digits are arranged in succession, the position of each digit has a place value, and the number is equal to the sum of the products of each digit by its place value. Or:
The value is represented as a polynomial in the base of the number system. |
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Hashing
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A computing technique that takes numbers and scrambles them, and one way to scramble numbers is to interpret them in a different base.
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Digits in Base 16
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0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F
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Converting from Base 10 to other Basess
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While (the quotient is not zero)
1. Divide the decimal number by the new base 2. Make the remainder the next digit to the left in the answer 3. Replace the decimal number with the quotient |
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Low-Voltage Signals
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Equated with a 0.
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High-Voltage Signals
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Equated with a 1.
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Storage Locations
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Storage locations cannot be empty. they must contain either a 0 or a 1.
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Bit
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Binar digit, the smallest storage unit in the computer
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Byte
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A group of 8 bits
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Words
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Groups of bytes. The number of bits in a word is known as the word length of the computer.
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