History of Computers 1.6 thru 1.13

0zeroand1one eightbinarydigitsgroupedtogether

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Unformatted text preview: 2 cm CPU—Central Processing Unit Directs the processing information throughout the computer Follows instructions from ROM and RAM ALU (Arithmetic Logic Unit)— arithmetic and logic operations – Nanoseconds (billionths of a second) – Can compare numbers – Basis of the computer’s decision­ making power Section 1.13 Section 1.13 Bits and Bytes Binary, Bit, Byte Binary, Bit, Byte Binary number system—base 2; uses only two digits – 0 (zero) and 1 (one) Eight binary digits grouped together represent a single number or letter Each 0 or 1 in the binary code is a bit (BInary digiT) Each group of 8 (8­bit unit) is a byte Binary Code Example Binary Code Example JIM Letter Binary Code J 01001010 I 01001001 M 01001101...
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