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

Doesn't the micro controller need to be programmed? I cannot find the programming code anywhere in the document. Can u please include the program code as well. It would be of great help for me and everyone else as interested. Thank u its a great idea and I am planning to do it.