embedded systems
DESCRIPTION
a good presentation on embedded systems and use of embedded systems in many educational and industrial fields.TRANSCRIPT
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
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