Computer Basics

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created 7 years ago by CierraS
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updated 7 years ago by CierraS
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9th grade
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comptech
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1

Computer

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

2

Input

Information fed into the system.-input

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Processing

To carry out operations on data or programs.-processing

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Output

Useful information that leaves the system.-output

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Data

Raw material ready for processing.-data

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Information

Data that has been processed and turned into facts.-info

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Storage

Area of the computer that holds data on a permenant basis.-storage

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Hertz

Measures speed of the central processing unit(CPU).-hertz

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Megahertz (MHz)

1 million cycles per seconds.-megahertz

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Gigahertz (GHz)

1 billion cycles per seconds.-gigahertz

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Pixel

The basic unit of an image.-pixel

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Resolution

Amount of pixles on the screen- the more pixles, the better the resolution.-resolutin

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Memory

area of computer that temporarily holds data or information that is waiting to be processed.-memory

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Kilobyte

1,000 bytes.-kilobyte

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Megabyte

1 million bytes.-megabyte

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Gigabyte

1 billion bytes. -gigabyte

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Terabyte

I trillion bytes. -terabyte

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Hardware

Physical parts of the computer (mouse, keyboard, printer CPU). -hardware

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Software

A computer program that instructs the computer what to do. -software

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System Software

A program that controls some aspect of the operation of a computer. -system software

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Application software

A program that carries out user defined tasks.-application software

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Boot process

Starting up the computer. -boot process

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Boot sector

A small program on the hard drive that tells the computer how to begin loading programs.-boot sector

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Binary or Base 2 Numbering System

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

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ASCLL Code

A numbering assigned to each other ans chacte in the alphabet. -ascll code

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Bit

Each 0 or 1. - bit

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Byte

8 bits. - byte

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Personal computer or microcomputer

A personal computer based on a microprocessor. -personal computer or microcomputer

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Desktop

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

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Laptop/Notebook

a portable computer all components contained within the laptop. -laptop/notebook

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Workstation

A desktop computer that is part of a Local Area Network-Workstation

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Mainframe

Large, expensive computer that is able to process data for thousands or users at the same time. -Mainframe

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Supercomputer

Fastest, most Powerful computers available. -supercomputer

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Server

Provides service to other computers over a network. -server

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PDA

Personal Digital assistance.Small portable device with network capabilities (apps). -PDA

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Smartphone

A cell phone that offers many features including internet access and apps. -smartphone

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Tablet

A wireless, portable personal computer which uses touch screen. - tablet