Shared Flashcard Set

Details

essential intro. to computers
pgs. com8-com17
25
Computer Science
10th Grade
09/10/2007

Additional Computer Science Flashcards

 


 

Cards

Term
Memory
Definition
Consists of electronic components that temporarily store instructions waiting to be executed by the processor, data needed by those instructions, and the results of processed data.
Term
Kilobyte (k or kb)
Definition
Equals 1,000 bytes
Term
Megabyte (MB)
Definition
Equals one million bytes
Term
Gigabyte (GB)
Definition
Equals one billion bytes
Term
Byte
Definition
Usually stores one character
Term
Impact printer
Definition
Prints by striking an inked ribbon against the paper; a laser printer is a 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 photo conductor drum, forming the images to be printed.
Term
Nonimpact printer
Definition
This is when they print without striking the ribbon against the paper
Term
Ink jet
Definition
Forms a character or graphic by using a nozzle that sprays tiny drops of ink onto the page.
Term
PPM
Definition
Pages per minute
Term
Display device
Definition
Is an output devices that visually conveys text, graphics, and video information.
Term
Monitor
Definition
Is a display device that is packaged as a separate unit.
Term
LCD
Definition
The most popular type uses a liquid display crystal, similar to a digital watch to produce images on the screen
Term
Flat panel
Definition
Takes up much less desk space and have gained significant popularity over the past few years
Term
Pixels
Definition
The surface of the screen of either a CRT monitor or LCD monitor is composed of individual picture elements
Term
Storage device
Definition
Is used to store instructions, data, and information when they are not being used in memory.
Term
Magnetic disks
Definition
Use magnetic particles to store items such as data, instructions, and information on a disk's surface.
Term
Formatting
Definition
Is 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
Is a narrow recording band that forms a full circle on the surface of the disk.
Term
Sector
Definition
The disk's storage locations consist of pie shaped sections, which break the tracks into small arcs
Term
Portable storage medium
Definition
Means you can remove the medium from one computer and carry it to another computer.
Term
Hard disks
Definition
Is 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
Backup
Definition
Is a duplicate of a file, program, or disk that you can use in case the originals is lost, damaged, or destroyed.
Term
Floppy disks or diskette
Definition
An inexpensive portable storage medium and the most widely used floppy disk is 3.5 inches wide and typically can store up to 1. 44 MB
Term
Access time
Definition
The time required to access and retrieve data.
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