MELJUN CORTES--Computer Introduction Details & Organized

8/8/2019 MELJUN CORTES--Computer Introduction Details & Organized

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Introduction to

Computers

MELJUN CORTES,BSCS,ACS

2007 S.Estey


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Purpose

This class will show you the basic parts ofa computer and how to use it.

In order to get the most out of this class,you should already know how to use akeyboard and a mouse.


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Parts of a Computer

A computer has two main types ofcomponents hardware and software.

The parts of the computer that you canphysically touch and move are calledhardware.

The programs that tell the computer what todo are called software.


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Getting Started: Out of the Box

Create a place for the computer

Power and Phone outlets, connectivity

Specific area for Tower/CPU

Unpacking

Enough room to open all boxes

Check your cables


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Hardware

The most common types of hardware are

Monitor

Keyboard

Mouse

System Unit

Printer

Speakers/headphones


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Monitor The monitor displays the text and graphics

that are generated by the computers

software.

Monitors come in different sizes and types.


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Eye StrainP

revention Place your monitor at a right angle from the

window.

Use an anti-glare screen to cut down thereflections. Place papers you're working from on a paper

holder about the same distance from your eyesas the monitor.

Occasionally look away from the monitor andfocus on a distant object for a few seconds togive your eyes a rest.


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Keyboard & Mouse The keyboard allows you to put information into

the computer.

The keys are laid out like a typewriter, but thereare extra keys that have special functions.

The mouse is a pointing device that allows youto select and manipulate objects on the screen.


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Printer & Speakers

The printer prints the text and pictures thatare created using the computer.

The speakers allow the user to hear thesounds created by the computer.


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System Unit The system unit, or tower, is the case that

holds the brains of the computer.

The tower has several things inside:

CPU

Hard drive

Disk drives

Memory


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CP

U The CPU is the Central Processing Unit.

This is the chip that actually runs thecomputer. The CPU interprets thesoftware to tell the other hardware what todo.


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Hard Drive

The hard drive is not removable from thecomputer. It is the permanent storage

area for the computer.

The hard drive is the computer's electronicfiling cabinet. It holds the operating

system, files, programs, and documents.


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Memory There are two kinds of memory for a computer:

RAM

RAM is Random Access Memory. It is the working memoryof the computer. If the computer is turned off, this memory iserased. Files are saved from RAM to the hard drive.

ROM ROM is Read Only Memory. This is permanent memory that

stores essential software for the computer.


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Software The operating system is the most

important piece of software for the

computer.

There are many different types of softwareavailable for computers.

Software can also be called programs


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Operating System The operating system is the main control

program of the computer.

It schedules tasks, communicates withhardware and peripherals and presentsthe basic user interface.

All other software on the computer mustcommunicate with the operating system.


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Types of Software Word Processing

Presentation

Spreadsheet

Internet Browser

Drawing

Database creation

Photo Editing

Video Editing

Virus Checking

Specialty software


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Library Software The librarys computers have limited

software.

They have the following types:

Word processing (Word)

Spreadsheet (Excel)

Presentation (PowerPoint)

Web browsing (Internet Explorer)


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InterfacesAn interface is the way the user tells the

software what to do and how the computer

displays information and options to theuser.


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Interfaces Originally, all computers had text-based

interfaces.

A text-based interface means that the usermust type in all the commands. If you mis-type, you have to backspace to your error,

which erases what you already typed.


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Text interface This is an example of

a text interface. This

is a program calledTelnet. Every $ is aprompt for a textcommand.

The commands arecase sensitive.


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G

raphical User Interfaces Graphical User Interface uses pictures to make it

easier for the user. It is more user friendly.

The use of drop-down menus, windows, buttons,and icons was first successfully marketed by

Apple on the Macintosh computer.

Almost all Windows and Mac programs now usea GUI.


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Desktop The Windows desktop uses a graphical

user interface to make it easier to use.

The desktop is the beginning screen forthe computer.

You can access all of the programs on the

computer from this screen.


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ClockStartbutton

Desktop

Taskbar

Icon


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P

rogram Window Most program windows have very similar

features.

Some programs have different toolbarsand menus.


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InternetExplorerProgramWindow

Close

Maximize/Resize

Minimize

Title Bar

Menu Bar

Tool Bar

Task BarStatus Bar

Clock

StartButton

Scroll Bar


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P

ractice makes perfect! If you dont practice your computer skills,

you will forget them.

If you ever have any trouble while on acomputer at the library, please donthesitate to let us know!


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P

ractice time Now, follow the steps on your handout to

practice opening and closing programs

and resizing windows on the computer.

If you have any questions, please feel freeto ask them now.

Documents

MELJUN CORTES--Computer Introduction Details & Organized