3. Embedded System
ï Embedded System is a Computer System
with dedicated function that is present
inside large electrical or mechanical
system.
ï The common properties of embedded
system are low power consumption and
low cost of hardware because it is limited
to perform single task.
ï It is based on Microprocessor or
Microcontroller.
4. Varieties of Embedded System
ï consumer,
ï cooking,
ï industrial,
ï automotive,
ï medical,
ï commercial ,
ï military applications.
5. Varieties of Embedded System
ï consumer,
ï cooking,
ï industrial,
ï automotive,
ï medical,
ï commercial ,
ï military applications.
6. Characteristics
ï Embedded System are designed to do
some specific task.
ï Embedded system is not always stand
alone device.
ï Program written for embedded system is
called as firmware and stored in ROM.
7. User Interface
ï User Interface ranges from No Interface to
dedicated User Interface that looks like
Stand alone System.
ï Standard Interfaces are buttons, Multi
Color LED, Graphic Character LCD with
Menu.
9. Peripherals
ï Embedded System talks with outside
world through peripherals
ï RS 232
ï USB
ï MultiMedia Cards
ï Networks
ï ADC/DAC
10. Tools to write program
ï Developers use compilers, assembler,
debugger.
ï In Circuit Debugger is used to check
circuit.
11. Reliability
ï Embedded systems reside in large
machines so it should be tested more
carefully against errors.
ï Reliability can be assured using following
techniques
ï Watch Dog
ï Sub System
ï Limp Nodes
ï Hypervisor