| A | B |
|---|
| Text | characters or numbers |
| Audio | any sound including speech and music |
| Video | motion images |
| Graphics | computer-generated images |
| Output device | any hardware device that makes information available to a user |
| Output medium | any material on which information is recorded |
| Monitor | most common soft-copy output mechanism |
| Soft copy | temporary version (display on screen) |
| Hard copy | permanent version (printout) |
| Diagonally | how monitor size is measured |
| Keyboard; scanner | types of input devices |
| Thousands of different colors | how most monitors can display informaton |
| CRT | most common type of monitor for desktop computers |
| RGB | Red, Green, Blue |
| Pixel | tiny single point in anything being displayed on monitor |
| Output | processed data that can be used immediately or stored |
| Graphics | computer-generated pictures |
| Wearable computer | type of hands-free computer |
| Printer | most common type of device for producing hard copy |
| Plotter | produces specialized kinds of large-sized, high-quality printing |
| Nonimpact printer | uses technology similar to photocopy machine |
| Sector | portion of disk similar to slice of pie |
| Disk pack | houses multiple hard disks |
| Facsimile machine | device than can send and receive copies of documents through telephone line |
| Data transfer rate | speed at which data is transferred from memory or from a storage device |
| FAT file | directory of tracks where files are stored on a disk |
| Pits | tiny indentations on optical disk |
| CD-burner | device to record information on CD |
| WORM disk | optical laser disk used for high-capacity storage |
| Active-matrix display | display in which separate transistors control each color pixel |
| Bit depth | Number of bits used by the card to store information about each pixel |
| 16-bit card | 131,072 colors |
| Ergonomics | study of the interactin of humans and the equipment they use |
| NTSC converter | Allows a television to become a display device for a computer |
| Refresh rate | number of times per second screen is redrawn |
| HDTV | new type of technology that does not require an NTSC converter |
| Impact printers | print by physically striking an inked ribon against the paper |
| Portrait format | Printed page is taller than wide |
| Landscape format | Printed page is wider than tall |
| Dot-matrix printer | impact printer that forms images by tiny dots |
| Inkjet printer | forms characters by spraying tiny droplets of ink onto sheet of paper |
| Photograph printer | designed to rpitn high-quality color imags |
| Laser mechanism | Relays characters to the printer |
| Speakers | Component that produces sound |
| Data storage | devices and media used for permanent recording |
| Multifunction device | piece of equipment thqt looks like a printer or copy machine and provides a variety of capabilities |
| Voice output | synthesized human speech |
| Speaker headset | miniature version of larger speakers |
| MIDI | Musical Instrument Digital Interface |
| Files extensions | identify specific file types |
| Floppy disk | thin Mylar wafer inside rigid plastic case |
| Monochrome monitor | displays information in one color |
| LCD display | smaller, lighter, thinner, and consume less power than CRT |
| Sequential access | accessed one after another |
| Direct access | accessed randomly |
| Cluster | group of sectors |
| Track | numbered concentric circle |
| Lands | flat, unburned areas on optical disk |
| Optical disk | Storage that is less expensive and greater durability than floppy disks and hard drives |
| SuperDisk | Developed by Imation Corporation; 120 MB capacity; backward compatible |
| ZipDisk | Developed by Iomega Corporation; 100 MB to 250 MB capacity |
| HiFD | Developed by Sony Corporation; 200 MB capacity; backward compatible |
| 150 KB/second | Speed of first CD-ROM |
| CD-R Disk | allows recording |
| CD-RW Disk | Can be rewritten multiple times |
| DVD-ROM Disk | Developed to store contents of full-size movies |
| CD-ROM Disk | Comes with data already encoded (stored) |
| Passive-matrix display | single transistor controls entire column or row |
| ppm | pages per minute |
| cps | characters per second |
| Tape cartridge | used mainly for backing up contents of hard drive |
| Access time | amount of time a storage device spends locating a particular file |
| FMD-ROM | optical disk storage capacity 215 times greater than CD-ROM |
| Storage device | hardware component that houses a storage medium |
| Storage medium | where data is recorded |
| Permanent storage | attached to system unit |
| Removable storage | can be removed/replaced |
