Key Term | Definition |
access speed (214) | Measures the amount of time required by the storage device to retrieve data and programs. |
Blu-Ray (BD) (222) | A different optical format than either the DVD or the HD DVD and have a capacity of 25 to 50 gigabytes, |
CD (compact disc) (220) | One of the most widely ud optical formats. |
CD-R (CD-recordable) (220) | A CD that can be written to only once. |
CD-ROM (compact disc–read only memory) (220) | A CD that cannot be written on or erad by the ur. |
CD-ROM jukebox (228) | Provide automatic access to a large collection or library of optical disks. |
CD-RW (compact disc rewritable) (221) | A CD that can be written to many times. (See also erasable optical disc) |
cylinder (216) | A part of a hard disk that runs through each track of a stack of platters. |
density (215) | How tightly the bits (electromagnetic charges) can be packed next to one another on a diskette. |
direct access (226) | The type of storage and retrieval system ud by magnetic and optical discs. | prentation是什么意思
disk caching (219) | A hard disk performance enhancement that improves processing by acting as a temporary high-speed holding area between a condary storage device and the CPU. |
DVD (digital versatile disc or digital video disc) (221) | a newer optical format that has replaced CDs as the standard; similar to CDs except that more data can be packed into the same amount of space. |
DVD player (221) | DVD ROM drive |
DVD +R (DVD recordable) (221) | A type of DVD write-once format |
DVD -R (DVD recordable) (221) | A type of DVD write-once format |
DVD-RAM (DVD random-access memory) (221) | A type of DVD rewriteable format |
DVD-ROM (DVD–read only memory) (221) | A DVD format that the ur cannot write to |
DVD-ROM jukebox (228) | Provide automatic access to a large collection or library of optical disks. |
DVD +RW (DVD rewritable) (221) | A type of DVD rewriteable format |
DVD -RW (DVD rewritable) (221) | A type of DVD rewriteable format |
enterpri storage system (227) | A type of system that large organizations u to promote efficient and safe u of data across the networks within their organizations. |
erasable optical disc (221) | A CD that can be written to many times. (See also CD-RW (compact disc rewritable)) |
file compression (219) | A hard disk performance enhancement that increas storage capacity by reducing the amount of space required to store data and programs. |
file decompression (219) | Rebuilding a file that has been compresd |
file rver (228) | A dedicated computer with very large storage capacity that provides urs access to fast storage and retrieval of data. |
flash memory card (223) | Credit card–sized solid-state storage devices widely ud in notebook computers. |
floppy disk (214) | A portable or removable storage medium that us flat circular pieces of Mylar plastic that have been coated with a magnetic material. |
floppy-disk cartridge (214, 215) | Portable storage devices that are able to store more information, and are thicker than a diskette. (e also high capacity disk) |
floppy disk drive (FDD) (214) | Stores data and programs by altering the electromagnetic charges on the disk’s surface to reprent 1s and 0s |
hard disk (216) | A device that saves files by altering the magnetic charges of the disk’s surface, has greater capacity than a diskette, and faster access time. mathworks |
hard-disk cartridge (217) | Easy to remove casttes who capacity is only limited by the number of cartridges. |
hard-disk pack (218) | Removable storage device ud to store massive amounts of information. |
HD DVD (high-definition DVD) (222) | country road take me homeThis format is very similar to DVD except that its storage capacity is much greater. |
head crash (216) | When a hard disk’s read/write head makes contact with the hard disk’s surface or with particles on its surface resulting in a catastrophic loss of data. |
hi def (high definition) (222) | The next generation of optical disc |
high-capacity disk (215) | Portable storage devices that are able to store more information, and are thicker than a diskette. (e also floppy disk cartridge) |
internal hard disk (216) | A magnetic condary storage device that is located inside the system unit. |
Internet hard drive (226) | Special rvice sites on the Web provide urs with storage. |
label (215) | Usually on the front of a diskette and provides urs with an area to write or document the contents of the disk. |
land (220) | Flat areas that optical discs u to reprent 1s and 0s. |
magnetic tape (226) | Writes data and programs by altering the electromagnetic charges on a recording surface and us a quential access method to store and retrieve it. |
magnetic tape reel (227) | Type of tape that was ud by mainframes and is typically 1/2 inch wide and 11/2 miles long and provides massive storage capacity. |
magnetic tape streamer (227) | The type of magnetic tape technology ud by mainframes today. |
mass storage (227) | The tremendous amount of condary storage required by large organizations. |
mass storage devices (227) | 推特英文网Specialized high-capacity condary storage devices designed to meet storage requirements of large organizations. |
media (214) | An actual physical material that holds data and programs. |
optical disc (220) | A storage device that us a lar beam to alter the surface of a plastic or metallic disc to reprent data |
optical disc drive (220) | A device with a lar that projects a tiny beam of light on a disc to reflect the light to determine a pit or land. |
organizational Internet storage (228) | High-speed Internet connection to a dedicated remote organizational Internet drive site. |
PC Card hard disk (217) | Credit card-size hard-disk cartridges available for notebook computers with typical capacities up to 5 gigabytes. |
pit (220) | The bumpy areas that optical discs u to reprent 1s and 0s. |
primary storage (214) | RAM or memory, where data is stored before being procesd. |
RAID system (228) | A system that enhances organizational curity by constantly making backup copies of files moving across the organization’s networks. |
redundant array of inexpensive disks (RAID) (219) | improve performance by expanding external storage, improving access speed, and providing reliable storage. |
condary storage (214) | Provides permanent or nonvolatile storage |
condary storage device (214) | Hardware where data and programs can be retained after the computer has been shut off. (e also storage device) |
ctor (215) | A wedge-shaped ctions of a track, part of how files are stored and organized on a flexible disk |
quential access (226) | The type of storage and retrieval system ud by magnetic tape. |
shutter (215) | Part of a diskette that slides to the side to expo the recording surface. |
software engineer (228) | A computer professional who analyzes urs’ needs and creates application software. |
solid-state storage (223) | Storage devices have no moving parts. |
storage device (214) | Hardware where data and programs can be retained after the computer has been shut off. (e also condary storage device) |
tape cartridge (227) | The type of magnetic tape technology ud by mainframes today |
tape library (228) | A device that provides automatic access to data archived on a large collection or library of tapes. |
track (215) | Rings of concentric circles without visible grooves, part of how files are stored and organized on a flexible disk |
USB drive (226) | The size of a key chain; the hard drives connect to a computer’s USB port enabling a transfer of files; has a capacity of 2GB. |
write-protection notch (215) | A slide on a diskette that opens and clos. When clod, files can be saved to the disk. When open, files cannot. |
Across | ||
Num. | Clue | Answer |
5 | Improves hard-disk performance by anticipating data needs. | Disk caching |
6 | Web-bad storage. | Internet drive |
7 | Invisible wedge-shaped division of a track. | Sector |
8 | Portable and removable storage device. | Floppy |
10 | Runs through each track of a stack of platters. | Cylinder |
11 | How tightly the bits can be packed next to each other. | Density |
Down | ||
Num. | Clue | Answer |
1 | Ring of concentric circles without visible grooves. | Track |
2 | 奥巴马辩论 Grouped disk drives treated as one hard disk by the computer system. | RAID |
3 | Measures the amount of time required to retrieve data. | Access time |
4 | Reprent 1s and 0s. | Pits and lands |
9 | Disk with 500 times the storage as a standard floppy. | Zip |
Num | Multiple Choice Answers | Matching Answers |
| comforter 1 | A | G |
2 | A | A |
3 | C | J |
4 | A | I |
5 | C | D |
6 | A | B |
7 | C | H |
8 | D | C |
9 | D | F |
10 | C | E |
Focus | 四级成绩身份证查询Applying Technology | Expanding Your Knowledge | Writing About Technology |
Ethical | CD-R and Music Files | ||
Web Tools | iPods and Music from the Internet | How Music Is Downloaded from the Internet Internet Hard Drives | |
Software Tools | iPod USB Storage | File Compression | |
Writing Skills | Storage Trade-offs | ||
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