Computer Basic

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created 6 years ago by MarquezMhjhs
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Computer Technology
updated 6 years ago by MarquezMhjhs
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1

Computer

A device that accepts input, processes data, produces output and stores information.

2

Imput

Information fed into the computer system.

3

Processing

To carry out operations on data or programs.

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Output

useful information that leaves the system.

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Data

Raw material ready for processing.

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Information

Data that has been processed and turned into useful facts.

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Storage

Area of the computer that holds data on a permanent basis.

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Hertz

Measures speed of the central processing unit.

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Megahertz (MHz)

1 million cycles per second.

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Gigahertz (GHz)

1 billion cycles per second.

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Pixel

The basic unit of an image.

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Resolution

Amount of pixels on the screen - the more pixels the better the resolution.

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Boot Process

Starting up the computer.

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Boot Sector

A small program on the hard drive that tells the computer how to begin loading programs

15

Binary or Base 2 Numbering System

A method for representing letters or numbers using only two digits, 0 and 1 - most basic level of communicating with computers.

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ASCII Code

a number assigned to each letter and character in the alphabet.

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Bit

each 0 or 1

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Byte

8 bits

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Personal computer or micro computer

A personal computer based on a microprocessor.

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Desktop

Personal computer that fits on a desk - more power and storage for less cost than a laptop.

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laptop/Notebook

A portable computer - all components contained withing the laptop.

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Workstation

A desktop computer that is part of a Local Area Network.

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Mainframe

Large, expensive computer that able to process data for thousands of users at the same time.

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Supercomputer

Fastest, most powerful computers available.

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Server

provides services to other computers over a network.

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PDA

Personal Digital Assistant. Small Portable Device with network capabilities.

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Smartphone

A cell phone that offers many features including internet access and applications. (apps)

28

Tablet

A wireless, portable personal computer which uses a touch screen.

29

Memory

Area of the computer that temorarily holds data that is waiting to be processed, stored, or output.

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Kilobyte

1,000 Bytes

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Megabyte

1 million bytes

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Gigabyte

1 billion bytes

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Terabyte

1 trillion bytes

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Hardware

phisical parts of the computer ( mouse keyboard printer cpu)

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Software

a computer software that instructes the comouter what to do.

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system software

a program that controls some aspects of the operation of a computer. Examples Operating System, compiler, utility program.

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Application software

a program the preforms a specific function. examples word proccesing, spreadsheet, presentations, a game, a photo program.