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AS & A Level Computer Science 9608 UPDATED Test Questions and CORRECT Answers
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1.1 Number Representation What are binaries?o Values stored as a series of ones and zeroes o A single 0 or 1 is called a binary digit or bit. o Any group of 0s & 1s can represent a character 4 2 1 0 0 0 0 0 0 0 0 o E.g. 65 in binary is 1000001 1.1 Number Representation What are BCD Representation?o Each digit in the number is written separately in a series of 4 bits o E.g. 398 in BCD o 3 = 0011 9 = 1001 8 = 1000 o 398 = o Use of BCD: used in business applications (arithmetic) where every digit has to be retained in a result
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AS & A Level Computer Science 9608
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AS & A Level Computer Science 9608
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