Skip to main content

Conversion of Binary or Hexadecimal to ASCII and Decimal in Embedded C

Binary or Hexadecimal conversion to decimal number would be easy, if you simply use the concept of conversion by multiplying by 2 to the digits in binary according to their places. But, it won't be easy in 8051 using Embedded C language as you have to first convert binary to hexadecimal and then, write code for conversion.

Example of conversion from binary to decimal Example of conversion from binary to decimal

Below is the example of code in which binary- 11111101 is first converted to hex- FD and then, code is written in embedded C language to convert it into decimal and then, transfer to the Port P0, P1, P2 of 8051 and that can be displayed on LCD accordingly.
#include "REG52 .h"

void main(void)
{
unsigned char x, b, d1, d2, d3;
b=0xFD;


x=b/10;
d1=b%10;
d2=x%10;
d3=x/10;

P0=d1;
P1=d2;
P2=d3;
}

Generally the code conversion is done by devices like ADS chips, the data is provided to the microcontrollers in binary and can be displayed in decimals on LCD or any displaying device.
Description of Code:
- Hexadecimal is the most convenient way of representing binary data. So, we usually use hexadecimal conversion of binary data and then, this hexadecimal ranging from 00H - FFH can be represented in decimal 000-255. Now, how will you write the above code of conversion binary to decimal.

Take the example, Binary is 11111101 converted to hexadecimal- FDH and in decimal it is 253. So, take decimal 10 (0A in hex) and divide 253 by 10 = 253/10 you will get Quotient and if you use % sign, you will get Remainder. So,
QuotientRemainder
253/10253 (passed to d1)
253%10255 (passed to d2)
25/102 (passed to d3)


Comments

Popular posts from this blog

How to Switch OFF Citizen Calculator

You might be confused on seeing no OFF button on your calculator. Actually, these are general calculator available at low cost in the market. They process simple calculations like division, subtraction, Addition, Multiplication. But, how will you OFF that calculator having no option on them. There is always a trick which OFF them. It depends on the company calculator and their series to which they belong. I can tell you about Citizen Calculator CT-500 (as you can see in the image), how can you switch OFF it and can save battery too. If you leave calculator idle for 6-7 minutes, it will goes OFF automatically. My calculator goes OFF in 6.50 minutes from the point of leaving it idle. But, this is not the power saving trick for these types of calculator having not much backup battery. To save the power of your normal calculator, here is the trick to switch OFF it. Press ' /(divide sign)', 'x(multiply sign)', '%(percentage sign)', 'autoreplay option(

Buzzer interface with 8051 microcontroller

Buzzer  is a electronic device that converts the electronic signal into buzzing noise, that is applied to it. It can be used as electronic bell or as quiz buzzer in many applications around us. Here, i world like to discuss the interfacing of a small buzzer with 8051 microcontroller and how different projects can be constructed. Buzzer Interfacing: This project shows the interface with AT89S52 microcontroller to a buzzer. When a push button is pressed, the buzzer will get ON and OFF ( number of times set in the code ) and then stops. Circuit Diagram: - The port P1 of the microcontroller is connected to buzzer. This type of connection is possible, if the current requirements of the buzzer is not more than 20mA. The output is in current source mode so that buzzer will turn ON when the output of the port is logic LOW. Switch is connected to port P3 which remains at logic HIGH by pull up resistor.  Code: #include "REG52.h" #define buz P1 sbit SW=P3^0; long int i; voi

Different ways to generate delays in 8051

The delay length in 8051 microcontroller depends on three factors: The crystal frequency the number of clock per machine the C compiler. The original 8051 used 1/12 of the crystal oscillator frequency as one machine cycle. In other words, each machine cycle is equal to 12 clocks period of the crystal frequency connected to X1-X2 pins of 8051. To speed up the 8051, many recent versions of the 8051 have reduced the number of clocks per machine cycle from 12 to four, or even one. The frequency for the timer is always 1/12th the frequency of the crystal attached to the 8051, regardless of the 8051 version. In other words, AT89C51, DS5000, and DS89C4x0 the duration of the time to execute an instruction varies, but they all use 1/12th of the crystal's oscillator frequency for the clock source. 8051 has two different ways to generate time delay using C programming, regardless of 8051 version. The first method is simply using Loop   program function in which Delay() function i