Unformatted text preview: to determine the information it represents. When referring to the bits in a byte or word, the bits are numbered from right to left beginning with zero. The bits in address 11111110 above are numbered as follows: Arithmetic/Logic Unit The arithmetic/logic unit ( ALU ) is capable of performing basic arithmetic operations such as adding, subtracting, multiplying, and dividing two numbers. This unit is also capable of performing logical operations such as AND, OR, and NOT. The ALU operates on words; thus the word length of a computer is the size of the quantities processed by the ALU. The word length of the Pentium IV is 32 bits or 4 bytes. 1 – 2 1 6 – 7 1 8 – . 1 1 – – Bit position Contents Address –––––––– –––––––1 111111–– 111111–1 1111111– 11111111 ) ) ) Contents 111–––11 1–1–1––1 –––––––– 11111111 1–1–1–1– ––11––11 ) ) )...
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 Fall '10
 MARIANAKANT
 Addition, Subtraction, bit pattern, arithmetic/logic unit

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