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C2 Vocabulary 0505
Key Terms from Chapter 2
Question | Answer |
---|---|
Arithmetic Logic Unit (ALU) | the sector of the CPU that performs the mathematical calculations that are required in many data processing programs |
Cache | provides a temporary storage area that provides a quick access to information |
CRT (Cathode Ray Tube) | a type of technology used in monitors |
Pixel | a single colored square on the screen - when joined, the image can be viewed |
Hard Copy | a readable, permanent copy that a printer outputs after the data has been processed |
Lumens | how the brightness of the projector is measured |
Document Cameras | display slides, transparencies, text, documents, 3D objects, and microscopic objects |
External Hard Disk Drives | are connected to a computer through cables and allow large quantities of data to be moved from one physical location to another |
CD-R (compact disk - recordable) | allows the used to record data once for storage purposes; after information is recorded in cannot be edited |
Ethernet port | used for high-speed connection to the Internet or another network, such as an intranet, or internal network |
Application Software | allows the computer to carry out specific functions, such as word processing, creation of databases and spreadsheets, etc. |
Instructional Software | presents content in tutorial, simulation, instructional game, problem solving, and drill-and-practice forms |
Alternative Labels | taped or glues to tops of frequently used keys on the standard keyboard. They can be a different color to add visual clarity, or have raised letters to provide tactile feedback to someone using the keys |
PAC Mate | a PDA designed for blind or low-vision users |
Electronic Pointing Devices | all the user to control the cursor using ultrasound, an infrared beam, eye movements, nerve signals, or even brain waves |