Table of Contents

## 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 |

**Which code is called 8421 code?**

Binary Codes for Decimal digits

Decimal Digit | 8421 Code | Excess 3 Code |
---|---|---|

1 | 0001 | 0100 |

2 | 0010 | 0101 |

3 | 0011 | 0110 |

4 | 0100 | 0111 |

### What are excess-3 BCD 8421 code?

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.

**Is 8421 reflective code?**

Reflective Code Codes 2421, 5211, and excess-3 are reflective, whereas the 8421 code is not.

#### What is a 8421 code and give example?

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.

**What will be the 8421 BCD code of decimal number 16?**

2410 in 8 bit binary would be 00011000 but in BCD8421 is 0010 0100. 99210 in 16 bit binary would be 00000011111000002 but in BCD8421 is 1001 1001 0010.

## How do you convert binary to 8421?

There are the following steps to convert the binary number to BCD: First, we will convert the binary number into decimal. We will convert the decimal number into BCD….Example 1: (11110) 2.

Binary Code | Decimal Number | BCD Code |
---|---|---|

A B C D | B4 :B3B2B1B0 | |

0 0 0 0 | 0 | 0 : 0 0 0 0 |

0 0 0 1 | 1 | 0 : 0 0 0 1 |

0 0 1 0 | 2 | 0 : 0 0 1 0 |

**What is the decimal equivalent of 8421 BCD 1010?**

2421 Code

Decimal Number | Binary Number | 2421 Code |
---|---|---|

3 | 11 | 0011 |

4 | 100 | 0100 |

5 | 101 | 1011 |

6 | 110 | 1100 |

### What is an excess 3 BCD code which short coming of the 8421 BCD code is overcome in the excess 3 BCD code illustrate with the help of an example?

It is particularly significant for arithmetic operations as it overcomes shortcoming encountered while using 8421 BCD code to add two decimal digits whose sum exceeds 9. Excess-3 arithmetic uses different algorithm than normal non-biased BCD or binary positional number system.

**Which shortcoming of the 8421 BCD code is overcome in the excess 3 BCD code?**

#### What is Excess-3 code explain Excess-3 code with example how we can convert decimal number to Excess-3 code?

We can also add 0011 in each 4-bit BCD code of the decimal number for getting excess-3 code….The Excess-3 code for the decimal number is as follows:

Decimal Digit | BCD Code | Excess-3 Code |
---|---|---|

3 | 0011 | 0110 |

4 | 0100 | 0111 |

5 | 0101 | 1000 |

6 | 0110 | 1001 |

**How do I change my BCD code to excess-3?**

Excess-3 code can be derived from BCD code by adding 3 to each number. For example, Decimal number 12 is represented as 0001 0010 in BCD. If we add 3 that is to add 0011 0011 then the corresponding Excess-3 code is 0100 0101.

## What is an excess-3 BCD code which short coming of the 8421 BCD code is overcome in the excess-3 BCD code illustrate with the help of an example?

**Is a non weighted BCD 8421 code it is derived from 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 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.

### How is excess-3 calculated?

According to excess-3 code we need to add 3 to both digit in the decimal number then convert into 4-bit binary number for result of each digit. Therefore, = 15.46+33.33=48.79 =0100 1000.0111 1001 which is required excess-3 code for given decimal number 15.46.

**What is an excess-3 BCD code which short coming of the 8421 BCD code is overcome in the excess-3 BCD code illustrate with the help of example?**

#### What is the GREY code for 0101?

Binary to Gray code conversion

Decimal Number | 4-bit Binary Code | 4-bit Gray Code |
---|---|---|

3 | 0011 | 0010 |

4 | 0100 | 0110 |

5 | 0101 | 0111 |

6 | 0110 | 0101 |

**What is the GREY code of 1001?**

Binary to Gray code conversion

Decimal Number | 4-bit Binary Code | 4-bit Gray Code |
---|---|---|

6 | 0110 | 0101 |

7 | 0111 | 0100 |

8 | 1000 | 1100 |

9 | 1001 | 1101 |

## What is the Gray code of binary 1010?

Gray to Binary Conversion table

Decimal | Gray | Binary |
---|---|---|

7 | 0100 | 0111 |

8 | 1000 | 1100 |

9 | 1101 | 1001 |

10 | 1111 | 1010 |