DATA REPRESENTATION AND NUMBER SYSTEMS
ASCII AND UNICODE CHARACTER ENCODING
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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True
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False
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Either A or B
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None of the above
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Detailed explanation-1: -Modern computers almost universally use 8-bit bytes, and the extended ASCII character set includes 127 more 8-bit characters, where the most significant bit is set to 1. The extended ASCII characters includes the binary values from 128 (1000 0000) through 255 (1111 1111).
Detailed explanation-2: -The ASCII table has 128 characters, with values from 0 through 127. Thus, 7 bits are sufficient to represent a character in ASCII; however, most computers typically reserve 1 byte, (8 bits), for an ASCII character.
Detailed explanation-3: -Extended ASCII is a version that supports representation of 256 different characters. This is because extended ASCII uses eight bits to represent a character as opposed to seven in standard ASCII (where the 8th bit is used for error checking).