PEC电气工程专业英语证书考试-电气专有名词1.doc

PEC电气工程专业英语证书考试-Glossary of Electrical Engineering Terms1 1-Wire A single-wire (plus ground) communications protocol. 1-Wire Master A 1-Wire interface master controller. 10GbE 10-Gigabit Ethernet 3G Third-generation mobile telephone protocols that support higher data rates, for non-voice communications such as multimedia and Internet access. 3GPP Third Generation Partnership Project, a collaboration of cell phone technology standards bodies. 802.11 IEEE standard that specifies medium-access and physical-layer specifications for 1Mbps and 2Mbps wireless connectivity between fixed, portable, and moving stations within a local area. 802.11a The IEEE standard that governs the deployment of 5GHz OFDM systems. It specifies the implementation of the physical layer for wireless UNII b. 802.11b An international IEEE standard for WLAN networks, operating at 2.4GHz and providing a maximum data transfer rate of 11Mbps. 802.11g A proposed standard that describes a wireless networking method for a WLAN that operates in the 2.4GHz radio band (ISM: Industrial Scientific Medical frequency band). It transfers data at up to 54Mbps. A-Weighting A-weighting is a standard weighting curve applied to audio measurements, designed to reflect the response of the human ear. Sound-pressure levels derived using A-weighting are denoted by dBA, or A-weighted dB levels. A/D Converter Analog to digital. Specifically: A/D converter, a circuit that converts analog signals into a stream of digital data. AC Alternating current: A signal or power source that varies with time, switching polarities. Typically, sinusodial and constant frequency. Accelerometer A sensor or transducer for measuring acceleration. ACPI Advanced Configuration and Power Interface: An industry-standard specification (co-developed by Hewlett-Packard, Intel, Microsoft, Phoenix, and Toshiba) for operating-system-directed power management for laptop, desktop, and server computers. A replacement for APM. ACPR Adjacent (al