Wireless technology continues to grow at a tremendous rate, with new applications
still reported almost daily. In addition to the traditional applications in communications,
such as radio and television, radio-frequency (RF) and microwaves
are being used in cordless phones, cellular communication, local area networks,
and personal communication systems. Keyless door entry, radio-frequency identification,
monitoring of patients in a hospital or a nursing home, cordless mice
or keyboards for computers, and wireless networking of home appliances are
some of the other areas where RF technology is being employed.

• Teacher: lee 李旺秋