1. A
PRACTICAL TRAINING SEMINAR REPORT
ON
8051 EMBEDDED SYSTEM
Training at
CREATIVE AND INNOVATIVE RESEARCH
JAIPUR
Submitted To: Submitted by:
Mr. RAHUL MATHUR SHUBHAJIT VISHWAS
ROLL NO. 10ESLEC052
ECE, SLBS, JODHPUR B.TECH. IV year ECE(B3)

2. TOPICS TO BE COVERED:-
• What Is Embedded System…?
• Micro Controller (Meaning).
• Requirement for embedded system.
• 8051 pin diagram.
• Features of Micro Controller.
• Schematic Representation.
• Various Integrated Circuits.
• Applications of Micro Controller.
• Advantages/Disadvantages of Micro Control.

3. What is an embedded system..??
 An Embedded System can be defined
as a computer system designed to
perform specific function.
 It bring together
software, hardware, and mechanical
parts with either fixed or
programmable capabilities.

4. Requirements for embedded system
Software:-
Keil µVision
Win- AVR
Proteus
Dip trace
Hardware:-
AT89C51
and
as our requirement

5. EMBEDDED SYSTEM IN DAILY LIFE
Moving message display Digital clock
DVD player Traffic Light

6. Micro controller
 Micro controller is used to control
the operation of various machines
and devices according to the
program/instruction.

7. PIN DIAGRAM OF THE 8051

8. Pin’s of 8051.
 Vcc
 GND
 Port 0
 Port 1
 Port 2
 Port 3
 RST
 ALE / PROG
 PSEN
 EA / VPP
 XTAL 1
 XTAL 2

9. 8051 Microcontroller
 Intel introduced 8051, referred as MCS- 51, in
1981.
 The 8051 is an 8-bit processor
 The CPU can work on only 8 bits of data at a time
 The 8051 became widely popular after allowing
other manufactures to make and market any
flavor of the 8051.

10. 8051 Features
 4K bytes ROM
 128 bytes of on-chip Data RAM
 32 bidirectional and individually addressable I/0 lines
 Two 16-bit timer/counters :T0 and T1
 On-chip clock oscillator

12. 78xx/79xx series
3-terminal positive voltage regulators
Xx- output voltage (7805 +5v, 7812 +12v,)
Output current is 1.0A

13. Uln 2003/2803 series
• This is 7/8 channel inductive load driver IC.
• Made up by Darlington transistor pair b/w
input-output.
• This IC can only sink but not source.

14. M
12V1 0
M
0 1
motor can’t drive
Input
from
m.c
Gnd.
This showes that this IC can only sink but not source

15. L293D
 The L293D is assembled in a 16 lead
plastic
package which has 4 center pins connected
together and used for heat sinking.
 This device is suitable for use in switching
applications at frequencies up to 5 kHz.
 600mA OUTPUT CURRENT CAPABILITY
PER CHANNEL
 It is motor driver IC’s.

16. print “hello world “at lcd
Proteus connection for lcd

17. Code
#include<regx51.h>
#include<LCD.h>
unsigned int i;
void delay(unsigned int d)
{
for(i=0;i<d;i++);
}
void main()
{
InitLCD();
while(1)
{
ClearLCDScreen();
WriteStringToLCD("hello");
WriteCommandToLCD(0xC0);
WriteStringToLCD("world");
delay(50000);
}
}

18. After coding

19. Advantages/ Disadvantages of M.C.
Advantages
 Cheap
 Small in size
 Programming of MC is simple
Disadvantages
 Functionality is quite difficult.
 Specific purposes
 Speed ( if you need a response to an input
In less than a few microseconds)