BY:::Gurpreet Singh

COMMUNICATION DEVICES

COMMUNICATION

COMMUNICATIONS REQUIRES:

WIRELESS WIRED

WIRELESS

BROADCAST RADIO - for radios/television. CELLULAR RADIO - for mobile communications/cellular

telephones.

MICROWAVES - radio waves that provide high speed signal transmission.

COMMUNICATIONS SATELLITE - a space station hat receives microwave signals from an earth based station.

INFRARED – sends signal using infrared light waves.

TRANSMISSION MODES

• A) Asynchronous transmission

• B) Synchronous transmission

TRANSMISSION DIRECTION

• A) Simplex transmission

• B) Half-duplex transmission

• C) Full duplex transmission

COMMUNICATIONS DEVICES

MODEM

CABLE MODEM

MULTIPLEXER (MUX)

NETWORK INTERFACE CARD

REPEATER

ROUTER