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Essential Guide to Computers
pgs.COM4-COM10
31
Computer Science
10th Grade
09/06/2007

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Cards

Term
What is a computer?
Definition
A computer is an electric device, operating under the control of instructions stored of its own memory, that can accept data (input),process the data according to specified rules(proceed) produce results (output) and show results for future use.
Term
Output Devices
Definition
Printers, media players, Monitor, (3)
Term
Input Devices
Definition
Scanner, Digital Camera, Microphone, PC camera, keyboard, mouse (6)
Term
Storage Devices
Definition
CD/DVD drive, hard disk drive, external hard disk, card reader, flash drive, (5)
Term
Other
Definition
System unit ,modem (2)
Term
What are the parts of the information processing cycle?
Definition
Input ,process, output and storage
Term
What Is Data?
Definition
Collection of unprocessed items
Term
What is information?
Definition
Conveys meaning that is useful to one or more people
Term
What are people that uses computers directly known as?
Definition
Computer users, end users, and users
Term
Computer Program or Software
Definition
A set of detailed instructions that tells the computer what to do.
Term
Components of a Computer
Definition
There are 6 primary components

• Input Devices

• The Processor (control unit and arithmetic/logic unit)

• Memory

• Output Devices

• Storage Devices

• Communications Devices
Term
Where do you find the processor, memory, and storage devices?
Definition
The system unit (box-like case)
Term
Input Devices
Definition
Any hardware component that allows you to enter data , programs, commands, and user responses into a computer.
Term
Examples
Definition
Keyboard (primary) mouse(primary) digital camera, scanner, and microphone.
Term
Keyboard
Definition
An input device that contains keys to enter data into the computer . A typical keyboard has 101 to 105 keys
Term
Examples of hand held computers
Definition
Smart phones ,PDA's(Personal Digital Assistant), Tablet PC's,
Term
Stylus
Definition
Small metal or plastic device that uses pressure to write, draw or make selections
Term
Mouse
Definition
Pointing device that fit comfortably in the palm of your hand. The mouse controls the movement of the pointer called mouse pointer to make selections.
Term
System unit
Definition
Case of electronic components of the computer to process data.
Term
Motherboard
Definition
Sometimes called a system board is the main circuit board of the system unit. Processor, memory and expansion slots can be added.
Term
Processor
Definition
Also called the CPU , interprets and carries out the basic instructions that operate the computer.
Term
Memory
Definition
Also called random access memory(RAM) consits of electric components that temporarily store instructions waiting to be excuted by the computers
Term
Memory
Definition
Also called random access memory(RAM) consits of electric components that temporarily store instructions waiting to be excuted by the computers
Term
Impact Printers
Definition
prints by striking an ink ribbon against the paper
Term
Formatting
Definition
THE PROCESSING OF DIVIDING THE DISK INTO TRACKS
Term
Sectors
Definition
Storage locations that breaks into small parts
Term
Optical Discs
Definition
Is a portable storage medium that consist of a flat, round, portable disc made of metal, plastic, and lacquer that is written and read by a laser.
Term
CD-ROM
Definition
is a type of optical disc that users can read but not write on. Holds from 650 MB to 1 GB of data.
Term
CD-R
Definition
discs can be erased and rewritten on multiple times. Acts as a floppy disc.
Term
CD-RW
Definition
discs can be erased and rewritten on multiple times. Acts as a floppy disc.
Term
DVD-ROM
Definition
is a very high-capacity optical disc capable of storing from 4.7 GB to 17 GB
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