What is the difference between ASCII code and BCD code ?

What is the difference between ASCII code and BCD code ?
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ASCII code 1. ASCII stands for American Standard Code for Information Interchange. 2. ASCII-7,7 consists of bits. This code can be used to specify 27 or 128 unique symbols. ASCII -8 is formed by adding a parity bit to the left of the ASCII-7 code. This code can be used to specify 28 or 256 unique symbols. 3. ASCII code is widely used in various types of computers, especially microcomputers. BCD code 1. The full form of BCD is Binary Coded Decimal. 2. BCD consists of 8 bits. 8 bits can indicate 24 or 16 different states. 3. The BCD code is used to convert decimal numbers to binary .   
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