Enables the unit to plug into a wall outlet without a power cord. Styles and features vary for wall tap plugs.

A watt is a unit of measure for true power consumption. One watt is one ampere of electrical current flowing at one volt.

A graphical representation of a signal in the form of a wave that displays how alternating current (AC) varies over time. Common waveform representations include sine wave, square wave, and trapezoidal wave. An electronic instrument called an oscilloscope is used to measure a waveform on a display screen.

Contains Microsoft Gadgets which display information or control external applications. Only available on Windows Vista.

Refers to an abnormal flow of current that is due to an improperly grounded electrical outlet.


Used in embedded systems, desktop, and laptop computers; the x86 line was developed by Intel, the term was typically used to indicate compatibility with the entire line including 80286, 80386 and 80486 models (hence, the “86”). Also used to differentiate between 32-bit hardware and software from their 64-bit counterparts.

Extensible Messaging and Presence Protocol (XMPP) is a communications protocol that was built to provide full support for cross-platform messaging so that one proprietary system’s users could talk to another’s.

In computing, a yottabyte (YB) is the largest unit of measurement for computer data. The prefix “yotta” is part of the International System of Units (SI), and means 10 to the 24th power. It is equivalent to a quadrillion gigabytes, 1,000 zettabytes or 1,000,000,000,000,000,000,000,000 bytes.


Z is the electronic signal for impedance; which in electrical devices, refers to the amount of opposition faced by direct or alternating current when it passes through a conductor component, circuit or system.