Learn 8051 microcontroller in Embedded C language and its Interfacing Techniques

Here, I have brought you whole syllabus of 8051 microcontroller needed to be learnt by anyone. Students belonging to Electronics and Communication, generally follow institute in their 2 year term of B.tech and learn 8051 microcontroller to get skilled work in embedded field. I tell you who love embedded systems should learn it from heart. If you are studying in Indraprastha University, Delhi should go another famous and needed subjects for placement point of view thinking students. But, Embedded Systems consist a huge and wide scope and waiting for professionals to come in this field and design more and new technology based gadgets for industries and consumers.

I have put some few topics that should learn after basic learning of 8051 microcontroller. You should about AT89S52 before going through below links and learning interfacing with microcontroller. These topics are collected on the basis to give basic knowledge of interfacing and coding 8051 microcontroller in Embedded C language. These topics will also help in developing a good embedded project for you.

Syllabus of 8051 to be done (Click below link to open pages and learn)

1. 8 LEDs connected to one port of 8051

2. Different Example code on LED interfacing 8051

3. LED Matrix

4. 7-Segment Display and Interfacing

5. Interfacing of Basic switches

6. Keypad/Switch Matrix

7. Concept of Debouncing in switches

8. Concept of Timer and its program code

9. Program to write Interrupt in 8051

10. Interfacing 16x2 LCD

11. Infrared Sensor

12. Relays and its program code

13. Motors Description

Comments

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 i...

Comparison Chart Between 8051, 8052, 8031and 8751

8051 is a popular 8-bit microcontroller and has been used in many applications since Intel introduced it. Many 8051 architecture are produced by Triscend, Intel, Atmel, Philips, Infineon (Siemens), ISSI, and Max Corp. Today, 8051 microcontrollers may not be popular but, the 8051 architecture is still popular and employed in thousands of embedded applications. This 8-bit architecture has been different segments such as 8052, 8051, 8751 and 8031 . 8052 is the super-set of 8051 and 8031 is the memory-less microcontroller hence, it has interfaced with external ROM. Whereas, 8751 chip has only 4Kbytes of on chip UV-EPROM. Everyone knows about the general 40-pin microcontroller i.e. 8051 introduced by Intel in 1980s and consists of serial communication pins, Timer, Interrupts, RAM, ROM. It has 4 ports and each port has 8 pins, total 32 pins and other 8 pins for other purposes. 8052 is the super-set of 8051 that consists of 8K bytes of internal RAM (4K in 8051), 256 by...

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() funct...

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