Data Processing Chapter 6
Terms
undefined, object
copy deck
- To wokr with a saved file, the file must be removed from___________.
- nonvolatile memory
- Minimun time it takes the device to locate a single item on a disk.
- Access Time
- A compact disc stores items in a single track that spirals from the _____ of the disc.
- center
- To read from or write on a floppy disk, a floppy disk drive must support that floppy disk's _______.
- Density
- With ______ the disc acts like a floppy or hard disk, allowing data, instructions, and information to be written onto it multiple times.
- CD-RW
- A typical floppy disk can store 1.44 ___ of data.
- MB
- The dirve designation of a CD-ROM or DVD_ROM drive usually follows alphabetically after that of the _______.
- hard disk
- Issued through the operating system to define, amoung other items, the file allocation table for each partition.
- high-level format
- The average access time for current floppy disk drives to locate an item on a floppy disk is 84 ms, or approximately ____ of a second.
- half
- Realibility is improved with ______ through the duplication of data, instructions, and information.
- RAID
- A piece of metal that covers an opening in the rigid plastic shell.
- Shutter
- the location of a single track through all platters
- cylinder
- A ________ can be purchased that already contains pictures, or can be used to record an individuals own pictures.
- Photo CD
- occurs when a read/write head touches the surface of a platter, usually resulting in a loss of data or sometimes loss of the entire drive
- head crash
- The flow of data, instructions, and information to and from a disk is managed by a special-purpose chip and its associated electronic circuits
- disk controller
- Because of the stacked arrangement of hard disk platters, the location of the read/write heads often is reffered to by its _____ instead of its track.
- cylinder
- A portion of the memory that the SPU uses to store frequrntly accessed items.
- Disk cache
- ________ is a RAID storage design that improves disk access times, but does not offer data duplication.
- Duplication
- The distance between the read/write head and the platter is approx. two _______ of an inch
- millionths
- Special purpose chip and its associated electronic circuits that managed (controls) the transfer of items from the hard drive to the rest of the computer. Two types: EIDE and SCSI
- hard disk controller (HDC)
- A typical hard disk can store 8 ___ of data.
- GB
- Organizes both sides of each platter into tracks and sectors to define where items will be stored on the disk
- low-level format
- Mechanism used to record and receive items to and from a storage medium
- Storage device
- Two types of hard disk controllers for personal computers are _____ and _____.
- IDE and SCSI
- A group of two or more integrated hard disks
- RAID
- Our gideline for proper care of floppy disks is to _____________.
- avoid heat, cold, and magnetic fields
- A duplicate of a file, program, or disk that can be used if the original is lost, damaged, or destroyed
- backup
- ____, ____, ____ is the fastest and most ecpensive common type of tape drive.
- QIC, DAT, DLT
- A mechanism that accurately reads from or writes items on the floppy disk
- Read/Write head
- Measured by the number of bytes it can hold. (of a speed of a storage device)
- Capacity
- The ____ is like a library card for a disk that contains a listing of all files, file types, and locations.
- FAT
- If a hard disk has only one partition, the hard disk usually is clled, or is designated, drive __.
- C
- When a program needs data, instructions, of information, the CPU checks the disk ______.
- cache
- A special high-capacity disk drive developed by Iomega corporation that uses a 3.5 inch zip disk.
- ZIP(r) drive
- PC cards most often are used with _____ and ______ computers.
- laptops & portable
- A typical disk stores on ____ and has 80 tracks on each side of the recording surface with 18 sectors per track
- both sides
- A CD_ROM can hold nearly 700 MB of data, instructions, and information, or about ____ times that which can be stored on a high-density 3.5-inch floppy disk.
- 450
- A table of information used to locate files on a disk.
- File allocation table
- Portable, inexpensive storage medium that consists of a thin, circular, flexible plastic disk with a magnetic coating enclosed in a square-shaped plastic shell.
- Floppy Disk or Diskette
- A silver-coated compact disk that uses the same laser technology as audio CD's for recording music.
- CD-Rom
- The time it takes the drive to transmit data, instructions, and information from the CD-Rom to another device
- data transfer rate
- __________ is a Windows utility that frees up space on a hard disk by listing files that can be deleted safely.
- Disk Cleanup
- Extremely high capacity compact disc capable of storing from 4.7 GB to 17 GB
- DVD-Rom
- Consists of several flexible, circular disks, called platters, on which items are stored electronically
- hard disk
- Similar in size to a credit card or ATM card, stores data on a thin microprocessor embeded in a card.
- smart card
- The physical material on which items are kept.
- Storage Medium
- Means of paying for goods and services over the internet
- Electronic money (e-money) or Digital Cash
- A ______ is the smallest unit of space used to store data.
- cluster
- _________ often os performed to make hard disks more efficient (faster) or to allow the installation of multiple operating systems on the same hard disk.
- Partitioning
- Used to store microscopic images of documents on roll or sheet film (uses a 100- to 215- foot roll of film)
- Microfilm