Device Switching Using PC’s Parallel Port

Imagine the convenience, if we could control different devices at home/industry by using a single PC. Our project aims at the same and could be used to control the printer power, loads & other household electrical appliances. The circuit comprises decoder, inverter, latch & relay driver sections. To control these equipments we are using PC’s Parallel port. The program of controlling is written in C language. It is compiled using Turbo C compiler.
The project though a bit expensive, is very efficient in control of real world peripherals.
Contents:

1. INTRODUCTION
2. PARTS LIST
3. BLOCK DIAGRAM
4. COMPONENT DESCRIPTION
   • Parallel Port
   • IC 74LS154
   • IC 74LS74
   • 1C 74 LS05
   • 1C ULN 2803
   • Relay
5. CIRCUIT DESCRIPTION AND WORKING
6. SOFTWARE PROGRAM
7. CONCLUSION

Download The Entire Project Report From HERE

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