19-07-2012, 11:10 AM
STUDENT COLLEGE ENTRY ALERT TO HOD USING WIRELESS TECHNOLOGY
STUDENT COLLEGE ENTRY ALERT .pptx (Size: 638.71 KB / Downloads: 39)
EMBEDDED SYSTEMS
Embedded systems is defined as, for a particular application implementing the software code to interact directly with that particular hardware what we built . Software is used for providing features and flexibility, Hardware is used for performance.
APPLICATIONS:-
Signal processing
Robotics
Cellular phones
Video games etc..
MICRO CONTROLLER
A highly integrated chip that contains all the Typical components like CPU,RAM,ROM,I/O ports and timers comprising a controller. microcontroller is designed for a very specific task to control a particular system, which cuts down on production costs.
RADIO FREQUENCY IDENTIFICATION(RFID)
"RFID" means radio frequency identification, i.e., technologies that use radio waves to automatically identify individual items.
"Tag" means a microchip that is attached to an antenna and is able to transmit identification information, i.e., capable of receiving data from, or transmitting data to, a reader.
"Reader" means a device, capable of reading data from a tag or transmitting data to a RFID tag.
RF RECEIVER
A radio receiver is used for performing receiving operation, whereby a high frequency signal transmitted from radio transmitter is received through another antenna.
RF receiver consists of HT648L decoder