## What does the 8421 code refer to?

views 1,428,169 updated. 8421 code A weighted code in which each decimal digit 0 through 9 is represented by a four-bit codeword. The bit positions in each codeword are assigned weights, from left to right, of 8, 4, 2, and 1. See also binary-coded decimal, excess-3 code, biquinary code. A Dictionary of Computing.

**Which is an example of reflective code?**

Hence the 5211 code represents the decimal numbers from 0 to 9. A code is said to be reflective when code for 9 is complement for the code for 0, and so is for 8 and 1 codes, 7 and 2, 6 and 3, 5 and 4….

Decimal Number | Binary Code | Gray Code |
---|---|---|

2 | 0010 | 0011 |

3 | 0011 | 0010 |

4 | 0100 | 0110 |

5 | 0101 | 0111 |

### What is the example of BCD code?

Examples. The BCD or binary-coded decimal of the number 15 is 00010101. The 0001 is the binary code of 1 and 0101 is the binary code of 5. Any single decimal numeral [0-9] can be represented by a four bit pattern.

**What is 2421 code example?**

Let us find the 2421 equivalent of the decimal number 786. This number has 3 decimal digits 7, 8 and 6. From the table, we can write the 2421 codes of 7, 8 and 6 are 1101, 1110 and 1100 respectively. Therefore, the 2421 equivalent of the decimal number 786 is 110111101100.

#### Is 8421 self complementary?

Excess-3 binary code is a 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.

**Why BCD is called 8421?**

The BCD8421 code is so called because each of the four bits is given a ‘weighting’ according to its column value in the binary system. The least significant bit (lsb) has the weight or value 1, the next bit, going left, the value 2. 2410 in 8 bit binary would be 00011000 but in BCD8421 is 0010 0100.

## How do I use 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 is a reflected code write about reflected code by giving examples?**

The reflected binary code or Gray code is an ordering of the binary numeral system such that two successive values differ in only one bit (binary digit). Gray code also known as reflected binary code, because the first (n/2) values compare with those of the last (n/2) values, but in reverse order.

### Are 8421 and BCD same?

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 is the decimal equivalent of BCD number 0100 1000 0111?**

Decimal numbers | 8421(BCD) | 6311 |
---|---|---|

3 | 0011 | 0100 |

4 | 0100 | 0101 |

5 | 0101 | 0111 |

6 | 0110 | 1000 |

#### What is the 8421 code for the hexadecimal value 75?

Decimal-hexadecimal-binary conversion table

Dec | Hex | Dec |
---|---|---|

8 | 8 | 72 |

9 | 9 | 73 |

10 | a | 74 |

11 | b | 75 |

**Why BCD is called 8421 code?**