A PRESENTATION ON EMBEDDED SYSTEM

PRESENTED BY :- PAVAN KUMAR JANGID

CONTENTS What is embedded

system. Examples of

embedded system. Introduction of 8051

microcontroller. Architecture of 8051

microcontroller. Pin configuration of

8051

microcontroller. Interrupts in 8051. Counter & Timer in

the 8051. Software of

embedded system. Applications of

embedded system.

What is embedded system

The embedded system is combination of hardware and software and it can be program to perform a specific task.

The embedded system are electronics system that contain a microprocessor or microcontroller.

An embedded system is a low cost high performance system.

Examples of embedded system

Remote (Controller) of TV Digital Camera Automatic Engines Electronics instruments Washing Machine Telecommunication

Introduction of 8051 microcontroller

In 1981 , Intel corporation introduced an 8-bit microcontroller, called the 8051.

It has 8-bit data bus and 16-bit address bus.

This is an 8-bit microcontroller, means it can work on only 8-bit of data at a time.

Architecture of 8051 microcontroller

CPU

On-chip RAM

On-chip ROM for program code

4 I/O Ports

Timer 0

Serial PortOSC

Interrupt Control

External interrupts

Timer 1

Timer/Counter

Bus Control

TxD RxDP0 P1 P2 P3

Counter Inputs

Pin Configuration of 8051 microcontroller

Interrupts in 8051

An interrupt is the occurrence of an event that cause a temporary suspension of a program while the event is serviced by another program (Interrupt Service Routine ISR or Interrupt Handler).

There are two types of interrupt sources: 1. INTR0 2. INTR1

Counter & Timer in the 8051

The 8051 has 2 timers/counters: timer/counter 0 and timer/counter 1.

The timer is used as a time delay generator.

An event counter external input from input pin to count the number of events on registers.

Gate

C/ M1 M0 Gate

C/ M1 M0

Soft wares used in embedded system

Applications of embedded system

Consumer Electronics Domestic products Office products

Traffic Control System Biomedical Handheld Computers Communication

THANK YOU

QUERIES