jeevan
Yes , it is a self complementry code but not a weighted code
If the one's complement of the code is equal to the nine's complement of the code, then it is called a self complementing code.
Excess-3 code is also known as self complementary, because it can easily be complemented(9's complement) to perform addition in the case of subtraction.
a binary code is self complementary if complement of any code word is again a code .in self completing codes 9's complement of a number can be obtained by interchanging 0's and 1's.
A self complementing code is one thats 9's complement in decimal is the 1's complement in binary.Ex: The 9's complement of 7 is 2 in decimal. In 2421 code, and .
9's complement of a decimal number represented in 2421 code is easily obtained by replacing the 1s with 0s,and 0s with 1s,so 2421 code is called a self complementing code.example-2421 of '2' is '0010',after replacing the 0s with 1s and 1s with 0s weget '1101' which is the 2421 of '7'(9s complement of 2 is 7). Thus 2421 code is self complementary.
Well, honey, excess 3 code is called self-complementary because when you add a number to its 9's complement in excess 3 code, you get 1111. It's like adding a cherry on top of your sundae - it just completes the whole darn thing. So, in this case, the number and its complement together make a perfect pair, just like peanut butter and jelly.
The 8421 code, also known as binary-coded decimal (BCD), is a way of encoding decimal numbers in a binary format. In this code, each digit of a decimal number is represented by its equivalent four-bit binary value, where the weights of the bits are 8, 4, 2, and 1. For example, the decimal number 25 is represented in 8421 code as 0010 0101, corresponding to the digits 2 and 5. This coding system allows for easy conversion between decimal and binary, making it useful in digital systems and applications.
The number 8421 is spelled "eight thousand four hundred and twenty-one."
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All My Children - 1970 1-8421 was released on: USA: 3 September 2002