28-02-2011, 03:56 PM
presented by:
C.SRIDIVYA
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DEVICES CONTROLLING THROUGH PC
OBJECTIVE OF PROJECT
The main objective of the project is to describe a new economical solution to home operating devices using pc.
NEED OF PROJECT
Drastic increase in the usage of computers.
Now a days more time is spent on computers so it became necessary to design a device for controlling switches from computer.
Need For Embedded Systems
Flexibility
Ease of programming
Cost Effective
Time complexity
Scenario Independent
Reliability
EMBEDDED SYSTEMS
Embedded system is a combination of hardware and software.
Embedded system is a specialized system that is a part of larger system or machine.
Embedded systems are electronic devices that incorporate microprocessors within their implementations
REQUIRMENTS
HARDWARE COMPONENTS
AT89S52
Micro controller
P.C
Relays
ULN 2003
A.C devices
SIMULATION
Tool : keil microvision
Platform : windows
Language:Embedded c
AT89S52 MICRO CONTROLLER
FEATURES
4.0V TO 5.5V Operating Range
Fully Static Operation :0 Hz to 33Mhz
32 Programmable i/o lines
256*8 bit internal Ram
Three 16 bit timers/counters
low-power idle and power-down modes