Introduction to Embedded Systems.pptx

Introduction to Embedded Systems

 Introduction to Embedded Systems
 Purpose of Embedded Systems
 Classification of Embedded Systems
 Classification Based on Generation
 Classification Based on Complexity & Performance
 Classification Based on Deterministic Behavior
 Classification Based on Triggering
 Applications of Embedded Systems
 Advantages of Embedded Systems
 Disadvantages of Embedded Systems
Content

System
A system is a way of organizing or doing one or many tasks according to fixed plan, program or set of rules.
1) Digital Watch is an example of a system
2) It is time display system
Introduction to Embedded Systems
Embedded System
A computer system having CPU, RAM, ROM, Display, Scanner etc. Placed on a single chip is called Embedded
system.
It is an electronic or electro-mechanical system designed to perform a specific task & is combination of both
hardware and software.
Every Embedded system is unique, hardware & software are highly specified to the application domain.
Example: ATM Machine, Washing Machine, Air Conditioner, Mobile Phones etc.

Purpose of Embedded Systems
Embedded system is designed to perform the following tasks.
 Data Collection
 Data Communication
 Data Processing
 Monitoring
 Control
 Application Specific User Interface

Classification of Embedded Systems
Embedded system is classified into 4 types based on different criteria.
 Based on Generation
 Based on Complexity & Performance
 Based on Deterministic Behavior
 Based on Triggering
Also Based on the Execution Behavior, Real Time Embedded Systems are classified into hard and soft.

Based on Generation

Based on Complexity & Performance
Embedded systems are classified into 3 types as follows.
 Small Scale Embedded Systems
 Medium Scale Embedded Systems
 Large Scale Embedded Systems

Based on Deterministic Behavior

Based on Triggering
Embedded systems are reactive in nature.
Reactive nature in the sense process control systems in industrial control are classified based on the
trigger.
Reactive systems can be either
 Event Triggered
 Time Triggered

Applications of Embedded Systems

Advantages of Embedded Systems
The advantages of Embedded Systems are:
 They are convenient for mass production. This results in low price per piece.
 These systems are highly stable and reliable.
 Embedded systems are made for specific tasks.
 The embedded systems are very small in size, hence can be carried and loaded anywhere.
 These systems are fast. They also use less power.
 The embedded systems optimize the use or resources available.
 They improve the product quality.

Disadvantages of Embedded Systems
The disadvantages of Embedded Systems are as follows:
Once configured, these systems cannot be changed. Hence, no improvement or upgradation on the ones designed and
created can be made.
They are hard to maintain. It is also difficult to take a back-up of embedded files.
Troubleshooting is difficult for embedded systems. Transferring data from one system to another is also quite
problematic.
Because these systems are made for specific tasks, hardware is limited.

Advantages of Embedded Systems
THE END

Introduction to Embedded Systems.pptx

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