AC-3 is a 5.1 format, which means that it provides five full-bandwidth channels, front left, front right, center, surround left, and surround right. A low-frequency effect (LFE) channel is included for the sound needed for special effects and action sequences in movies. The LFE channel is one-tenth of the bandwidth of the other channels and is sometimes erroneously called the subwoofer channel. AC-3 also has a downmixing feature that ensures compatibility with devices that do not support the 5.1 format.

Acrobat is actually a set of products. The latest version includes a "toolkit" that lets you scan in or otherwise capture documents created with Word, Pagemaker, and other desktop publishing products. The resulting PDF files can then be available for viewing either directly with the Reader or they can be viewed as embedded files within the browser.

Adware has been criticized because it usually includes code that tracks a user's personal information and passes it on to third parties, without the user's authorization or knowledge. This practice has been dubbed spyware and has prompted an outcry from computer security and privacy advocates, including the Electronic Privacy Information Center.

AIBO's head has a touch sensor for non-verbal communication, stereo microphones for hearing, a color video camera for vision, and a distance detector to allow AIBO to avoid obstacles. AIBO has voice recognition components that allow AIBO to be programmed to recognize its own name and understand over 50 verbal commands (depending on where AIBO is in its growth cycle). At present, AIBO is bi-lingual and understands Japanese and English; Sony plans to add German and French to increase the robot's world-wide appeal. AIBO is able to communicate with humans by emitting musical tones and changing the color and shape of its eyes. AIBO can be "taught" to play games, but unlike a game, AIBO cannot be reset.

In computer and Internet wireless applications, the most common type of antenna is the dish antenna, used for satellite communications. Dish antennas are generally practical only at microwave frequencies (above approximately 3 GHz). The dish consists of a paraboloidal or spherical reflector with an active element at its focus. When used for receiving, the dish collects RF from a distant source and focuses it at the active element. When used for transmitting, the active element radiates RF that is collimated by the reflector for delivery in a specific direction.

At frequencies below 3 GHz, many different types of antennas are used. The simplest is a length of wire, connected at one end to a transmitter or receiver. More often, the radiating/receiving element is placed at a distance from the transmitter or receiver, and AC is delivered to or from the antenna by means of an RF transmission line, also called a feed line or feeder

Apple was founded by Steven Jobs and Stephen Wozniak. Jobs and Wozniak had been friends in high school and in 1975 were members of The Homebrew Computer Club, a now-legendary group where electronics enthusiasts met to discuss the Altair 8800 (the only personal computer available at the time) and other technical topics. Wozniak designed his own microcomputer and offered his plans to Hewlett-Packard, where he was working as an engineering intern. After HP turned him down, Wozniak joined forces with Jobs to manufacture personal computers in Job's garage. That endeavor started out as a shoestring operation, but quickly became successful. The pair introduced a relatively modern-looking computer in a plastic case in 1977 and incorporated as Apple Computer that same year. By 1980 the company had grown to include over 1000 employees.

When in the context of internet web sites ASP refers to a specification similar to that of CGI, ASP technology allows the site developer to create dynamic web pages through the use of ActiveX.

ASP pages are used for numerous tasks including form handling, database connectivity, even putting a date and time on a page. Jscript or VB Script are the most common scripting languages used with ASP pages.