What is meant by 2421 code?
The Aiken code (also known as 2421 code) is a complementary binary-coded decimal (BCD) code. A group of four bits is assigned to the decimal digits from 0 to 9 according to the following table.
What is the equivalent 2421 code for the following BCD 0101?
2421 Code
| Decimal Number | Binary Number | 2421 Code |
|---|---|---|
| 2 | 10 | 0010 |
| 3 | 11 | 0011 |
| 4 | 100 | 0100 |
| 5 | 101 | 1011 |
Is 2421 a non weighted code?
The 8421 and Excess-3 codes are sequential, whereas the 2421 and 5211 codes are not. Non weighted codes are codes that are not positionally weighted. That is, each position within the binary number is not assigned a fixed value.
What is the 8421 code and how is it used?
In other words, the BCD is a weighted code and the weights used in binary coded decimal code are 8, 4, 2, 1, commonly called the 8421 code as it forms the 4-bit binary representation of the relevant decimal digit.
What are excess-3 codes and gray codes?
Excess-3 Code is a non-weighted BCD (8421) Code. Excess-3 Code is derived from 8421 code by adding 0011 (3) to all code groups. It is a sequential code, thus can be also used for performing arithmetic operations….Excess-3 Code.
| Decimal Numbers | Binary Numbers | Excess-3 Code (Binary Number + 0011) |
|---|---|---|
| 8 | 1000 | 1011 |
| 9 | 1001 | 1100 |
What is digital 3 excess electronics code?
The excess-3 code (or XS3) is a non-weighted code used to express code used to express decimal numbers. It is a self-complementary binary coded decimal (BCD) code and numerical system which has biased representation.
How do you write code 8421?
Then we can see that 8421 BCD code is nothing more than the weights of each binary digit, with each decimal (denary) number expressed as its four-bit pure binary equivalent….Truth Table for Binary Coded Decimal.
| Decimal Number | BCD 8421 Code |
|---|---|
| 7 | 0000 0111 |
| 8 | 0000 1000 |
| 9 | 0000 1001 |
| 10 (1+0) | 0001 0000 |
What unweighted code?
Non-Weighted Codes: Non-weighted or un-weighted codes are those codes in which the digit value does not depend upon their position i.e., each digit position within the number is not assigned fixed value. Examples of non-weighted codes are: Un-weighted BCD code, Excess-3 code and gray code.
Is 8421 self-complementary?
Excess-3 binary code is an unweighted self-complementary BCD code. Self-Complementary property means that the 1’s complement of an excess-3 number is the excess-3 code of the 9’s complement of the corresponding decimal number.
Which code is called as 8421 code?
What does 2421 stand for?
The Aiken code (also known as 2421 code) is a complementary binary-coded decimal (BCD) code.
What is the meaning of 2421 in digital circuits?
2421 in digital circuits is a subgroup of BCD code. A BCD code is one in which the decimal number are grouped into four bits.BCD codes can again be classified as weighted code and non weighted code. Weighted code are again classified into positively weighted and negatively weighted codes.
What is the difference between excess 3 code and 2421 code?
In Excess-3 code, 3 is added to the individual digit of a decimal number then these binary equivalent are written. For example, (278) 10 in excess-3 code is represented by 0101101011. This code is not a weighted code. 2421 code is another BCD code. It is weighed code. For example, 6 is 1100 and 3 is 0011.
What is Aiken code 2421?
The Aiken code (also known as 2421 code) is a complementary binary-coded decimal (BCD) code. A group of four bits is assigned to the decimal digits from 0 to 9 according to the following table.