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In how many different combinations do the standard ASCII codes come?
128
100
256
64
128
Standard ASCII (American Standard Code for Information Interchange) is a 7-bit character encoding scheme. It provides 27=128 distinct combinations, representing control characters, numeric digits, and English alphabetic characters.
ANSI X3.4-1986
Standard ASCII (American Standard Code for Information Interchange) is a 7-bit character encoding scheme. It provides 27=128 distinct combinations, representing control characters, numeric digits, and English alphabetic characters.
N=2n тАФ where N is the number of combinations and n is the number of bits.
27=128 тАФ calculation for standard ASCII code combinations.
The encoding uses 7 bits of binary data to assign a unique integer value from 0 to 127 to each character. The total number of unique patterns is calculated using the formula N=2n, where n is the number of bits allocated for the character set.
ASCII was originally designed as a 7-bit code.
Extended ASCII uses 8 bits to provide 256 (28) combinations, including additional symbols.
The range of standard ASCII is from 0 to 127 in decimal notation.
Uniformity in character representation across different computer systems.
Efficient storage and processing for English-based character sets.
Inability to represent characters from non-English languages due to limited range.
Lack of support for complex mathematical symbols or emojis.
Data communication and transmission between computer hardware.
Text file storage in legacy computing environments.
Option C (256) refers to Extended ASCII or Extended Binary Coded Decimal Interchange Code (EBCDIC).
Option D (64) represents a 6-bit encoding scheme, which is insufficient for the full ASCII character set.
A is correct тАФ Standard ASCII uses 7 bits, resulting in 27=128 unique combinations.
Remember that modern systems often use UTF-8, which is backward compatible with the first 128 characters of ASCII, but uses a variable number of bytes for other characters.
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