Glossary
Numbers and Symbols
- 802.11
Group of wireless protocols. 802.11a uses 5.0 GHz and has a maximum speed of 54 Mbps. 802.11b uses 2.4 GHz and has a maximum speed of 11 Mbps. 802.11g uses 2.4 GHz and has a maximum speed of 54 Mbps. 802.11n uses 2.4 and 5.0 GHz and has a maximum speed of 600 Mbps.
A
- A/V (Audio Video)
A combination of sound (audio) and gr aphics (video). Camcorders can capture A/V.
- AC voltage
Alternating current used by commercial power to transmit electricity to buildings. AC voltage is available at common electrical wall outlets, and power supplies convert AC to DC.
- accelerometer
A chip in many mobile devices used to detect the orientation of the device and change the display. A basic use is to change the display to landscape or portrait ...
Get CompTIA® A+® Training Kit (Exam 220-801 and Exam 220-802) now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
