An embedded system is a computer system designed to perform a dedicated function within a larger mechanical or electrical system. It has low power consumption and cost since it is limited to a single task. Embedded systems are used in consumer, industrial, automotive, medical, commercial, and military applications. They are programmed using firmware stored in memory like ROM.

1. Embedded
System
K.Senthil

2. Embedded System
4. Microprocessor, 6. RAM, 7.Flash Memory

3. Embedded System
 Embedded System is a Computer System
with dedicated function that is present
inside large electrical or mechanical
system.
 The common properties of embedded
system are low power consumption and
low cost of hardware because it is limited
to perform single task.
 It is based on Microprocessor or
Microcontroller.

4. Varieties of Embedded System
 consumer,
 cooking,
 industrial,
 automotive,
 medical,
 commercial ,
 military applications.

5. Varieties of Embedded System
 consumer,
 cooking,
 industrial,
 automotive,
 medical,
 commercial ,
 military applications.

6. Characteristics
 Embedded System are designed to do
some specific task.
 Embedded system is not always stand
alone device.
 Program written for embedded system is
called as firmware and stored in ROM.

7. User Interface
 User Interface ranges from No Interface to
dedicated User Interface that looks like
Stand alone System.
 Standard Interfaces are buttons, Multi
Color LED, Graphic Character LCD with
Menu.

8. Processors
 Microprocessor
 Processor with dedicated connections for
ROM, RAM and Flash
 Microcontroller
 Everything included in the chip

9. Peripherals
 Embedded System talks with outside
world through peripherals
 RS 232
 USB
 MultiMedia Cards
 Networks
 ADC/DAC

10. Tools to write program
 Developers use compilers, assembler,
debugger.
 In Circuit Debugger is used to check
circuit.

11. Reliability
 Embedded systems reside in large
machines so it should be tested more
carefully against errors.
 Reliability can be assured using following
techniques
 Watch Dog
 Sub System
 Limp Nodes
 Hypervisor