The Computer Revolution/Networks/Four Types of Wireless Communications

Infrared Wireless Transmission- "Tranmission of data signals using infrared-light waves"(williams/sayer,2007) These infrared-light waves are at a frequency too low for human eyes to receive and interpret. Infrared ports can be found in digital cameras, laptops, and printers as well as wireless mice. 'Advantages' no cords 'Disavantages' Line-of-sight communication is required-there must be an unobstructed view between transmitter and receiver 'Examples' http://www.computer-accessories.biz/mouse/wireless_mouse.htm Broadcast Radio- a wireless transmission medium that sends data over long distances (regions, states, countries) at up to 2 megabits per second (AM/FM Radio) Microwave Radio- Transmission of voice and data through the atmosphere as super high-frequency radio waves called microwaves. These frequencies are used to transmit messages between ground-based stations and satellite communications systems. (Williams & Sawyer, 2007). Communications Satellites- are microwave relay stations in orbit around the earth. A communications satellite (sometimes abbreviated to comsat) is an artificial satellite stationed in space for the purposes of telecommunications. Reference: Williams B. & Sawyer, S. (2007). Italic textUsing Information Technology-A Practical Introduction to Computers & Communications. Boston: McGraw-Hill Irwin.