Table of Contents
How to convert hex to BCD in assembly?
Algorithm For Hex to BCD Conversion
- Step I : Initialize the data segment.
- Step II : Initialize BX = 0000 H and DH = 00H.
- Step III : Load the number in AX.
- Step IV : Compare number with 10000 decimal.
- Step V : Subtract 10,000 decimal from AX and add 1 decimal to DH.
- Step VI : Jump to step IV.
How do you convert hex to deci?
To convert a hexadecimal to a decimal manually, you must start by multiplying the hex number by 16. Then, you raise it to a power of 0 and increase that power by 1 each time according to the hexadecimal number equivalent.
What is binary to BCD converter?
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 |
Which are the data transfer instructions of 8051?
The 8051 microcontroller has an 8-bit opcode which gives it the ability to handle 2^8(255) instructions….List of data transfer instructions.
| Operation | Mnemonics | Description |
|---|---|---|
| Memory to register | XCH A, address | [A]<-[Address] |
| Register to memory | MOVX @Ri, A | [Address]<-[A] |
| MOV a8, A | [Address]<-[A] | |
| MOV a8, Rn | [Address]<-[Rn] |
How to write a program for Hex to BCD conversion?
Write a Program For Hex to BCD Conversion in Assembly language . We have a 4 digit Hex number whose equivalent binary number is to be found i.e. FFFF H. Initially we compare FFFF H with decimal 10000 ( 2710 H in Hex ). If number is greater than 10,000 we add it to DH register.
How do you find BCD from Ax and BX?
Each time we subtract 100 decimal from AX and add 100 decimal to BX to obtain BCD equivalent. Then we compare number obtained in AX with 10 decimal. Each time we subtract 10 decimal from AX and we add 10 decimal to BX.
How to convert hex number bigger than 0x270f to 8051?
With the given algo hex number bigger than 0x270F can not be converted. But the same algo can be extended to handle greater values. 8-bit registers are used for the calculation since 8051 is 8-bit uC. Division is carried out by successive subtraction. You need a subroutine to carry out division which must provide quotient & remainder.
How do you convert hexadecimal to ASCII?
When the number is in that range, then the hexadecimal digit is numeric, and we are just simply adding 30H with it to get the ASCII value. When the number is not in range 0 – 9, then the number is range A – F, so for that case, we are converting the number to 41H onwards. In the program, at first, we are clearing the carry flag.