Shared Flashcard Set

Details

Essential Intro. To computers
COM 8- COM 13
25
Computer Science
10th Grade
09/10/2007

Additional Computer Science Flashcards

 


 

Cards

Term
Memory
Definition
Also called random access memory, or RAM, consists of electronic components that temporarily store instructions waiting to be executed by the process, data needs by those instructions, and the results of processes data (information).
Term
Kilobyte K or KB
Definition
Equals 1,000 bytes
Term
Megabyte MB
Definition
Equals approximately one million bytes.
Term
Byte
Definition
One memory location or one character.
Term
Byte
Definition
One memory location or one character.
Term
Impact printer
Definition
Prints by striking an inked ribbon against the paper. One type of impact printer is the dot-matrix printer.
Term
Nonimpact printer
Definition
Print by means other than striking a ribbon against the paper. Examples include an ink jet or laser.
Term
Ink Jet
Definition
Forms a character or graphic by using a nozzle that sprays tiny drops of ink onto the page.
Term
Laser Printer
Definition
High-speed, high-quality nonimpact printer that employs copier-machine technology. It converts data from the computer into a beam of light that is focused on a photoconductor drum, forming the images to be printed.
Term
PPM
Definition
Numbers of pages per minute.
Term
Display Device
Definition
An output device that visually conveys text, graphics, and video information.
Term
Monitor
Definition
A display device that is packaged as a separate unit.
Term
Flat panel monitor
Definition
An LCD monitor that uses a liquid display crystal, similar to a digital watch, to produce images on the screen.
Term
CRT (cathode ray tube)
Definition
The surface of the screen is composed of pixels.
Term
Pixel
Definition
Individual picture element.
Term
Storage devices
Definition
Used to store instructions, data, and information when they are not being used in memory.
Term
Magnetic Disks
Definition
Uses magnetic particles to store items such as data, instructions, and information on a disk's surface.
Term
Formatting
Definition
The process of dividing the disk into tracks and sectors so the computer can locate the data, instructions, and information on the disk.
Term
Track
Definition
A narrow recording band that forms a full circle on the surface on the disks.
Term
Hard Disk
Definition
A storage device that contains one or more inflexible, circular platters that magnetically store data, instructions, and information.
Term
Head Crash
Definition
When a read/write head touches a platter, usually resulting in loss of data or sometimes the entire drive.
Term
Floppy Disks
Definition
Also called diskettes, an inexpensive portable storage medium. The most widely used floppy disk is 3.5 inches wide and typically can store up to 1.33 megabytes of data, or 1,474,560 characters.
Term
Backup
Definition
A duplicate of a file, program, or disk that you can use in case the original is lost, damaged, or destroyed.
Term
Floppy Disk Drive
Definition
A device that can read from and write on a floppy disk.
Term
Access Time
Definition
The time required to access and retrieve data.
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