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Essential Intro. To Computers
Pages COM8-COM13
26
Computer Science
10th Grade
09/10/2007

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Cards

Term
Memory
Definition
Also called Random Access Memory(Ram); 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 (information).
Term
Kilobyte
Definition
K or Kb; equals 1,000 bytes
Term
Megabyte
Definition
Mb; equals 1 million bytes
Term
A byte
Definition
One memory location or one character
Term
Impact Printers
Definition
Prints by striking an inked ribbon against the paper; Also known as the dot-matrix printer
Term
Non-Impact Printers
Definition
They form character by means other than striking a ribbon against paper; Examples are in-jet printers and laser printers
Term
Ink-Jet Printer
Definition
Forms a character or graphic by using a nozzle that sprays tiny drops of ink on to the page
Term
PPM
Definition
Number of Pages per minute
Term
Laser Printer
Definition
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 photoconductor drum, forming the images to be printer.
Term
Display Devices
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
Also known as LCD ( The Most Popular Type of Flat Panel Monitor; Uses a liquid display crystal, similar to a digital watch, to produce images on the screen.
Term
Cathode Ray Tube
Definition
(CRT) The television like monitor is composed of individual picture elements called pixels
Term
Pixel
Definition
An 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
Use magnetic particles to store items such as data, instructions, and information on a disk's surface; Two types of Magnetic Disks are Floppy and Hard Disks
Term
Formatting
Definition
The process of dividing the disk into instructions, and information on the disk
Term
Track
Definition
A narrow recording band that forms a full circle on the surface of the disk
Term
Sector
Definition
Pie shaped sections that 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 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
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 Disks
Definition
Also called diskettes; An inexpensive portable storage medium and the most widely used floppy disks is 3.5 inches and typically can store up to 1.44 megabytes of data of 1,474,560 characters
Term
Floppy Disk Drive
Definition
A device that can read from and write on a floppy disk. Floppy disk drives are either built into the system unit or are external to the system unit and connected to the computer via a cable.
Term
Access Time
Definition
The time required to access and retrieve data
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