TELE

COM

MU

NIC

ATIO

NMedia Devices

Ms. K. Scruggs

OBJECTIVE

• Given instructions, the learner will discuss different components of telecommunications with 85% accuracy.

Telecommunication

• Telecommunication is the transmission of information over significant distances, for the purpose of communication.

Earlier Telecommunication Devices

• Early communication involved the use of visual signals and audio messages such as:

• Beacons• Smoke• Semaphore telegraphs• Signal Flags• Optical heliographs • Drumbeats• Lung-blown horns• Loud whistles

Modern Age Telecommunication Devices

• Modern Age devices used electricity and electronics such as:

• Telegraph• Telephones• Teletypes• Radio• Microwave

communication• Fiber Optics • Orbiting Satellites and

Internet

WIRELESS MEDIA

Media Transmission• A sending device is a generally

computer.• A communication device, such as a

modem, that converts the computer signal into signals supported by the communication channel.

• A Communications Channel or path, such as telephone lines, cable, or a wireless transmission link, over which the signal are sent.

• A receiving device that accepts the incoming signal, which is a general computer.

• Communication software

Radio Signals

• Radio signals travel in a straight line from one source to the other.

Microwave

• A microwave signal is sent through space in the form of electromagnetic waves. The signal is also sent is a straight line.

Doppler Radar Microwave Station

Microwave Station

Satellite Transmissions

• Communication satellites are placed in orbit 22,300 ft above the surface of the Earth.

• http://www.bing.com/maps/default.aspx?v=2&cp=44.023938~-99.71&style=h&lvl=4&tilt=-89.875918865193&dir=0&alt=7689462.6842358

Post Q’s?• What is the transmission of information over significant distances,

for the purpose of communication? – Telecommunication

• Name several earlier form of telecommunication devices.– Beacons, Smoke, Semaphore telegraphs, Signal Flags, Optical heliographs,

Drumbeats, Lung-blown horns, and Loud whistles• Name several modern forms of telecommunication devices.

– Telegraph, Telephones, Teletypes, Radio, Microwave communication, Fiber Optics , and Orbiting Satellites and Internet

• What travels in a straight line form one source to the other? – Radio Signal

• ________ is sent through space in the form of electromagnetic waves. – Microwave signal

Reference

• Wikipedia, The Free Encyclopedia http://en.wikipedia.org/wiki/Telecommunication

• Computer Basic, Second Edition• Bing Maps

http://www.bing.com/maps/default.aspx?v=2&cp=44.023938~-99.71&style=h&lvl=4&tilt=-89.875918865193&dir=0&alt=7689462.6842358