your personal computer[1]

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Your Personal Your Personal Computer Computer By Mary Jane Andrews By Mary Jane Andrews

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Your Personal ComputerYour Personal Computer

By Mary Jane AndrewsBy Mary Jane Andrews

What is a computer?What is a computer?A programmable machine that allows a A programmable machine that allows a

person to input information, so it can then person to input information, so it can then process, store, and output informationprocess, store, and output information

INPUT

PROCESS

STORE

OUTPUT

What happens to information What happens to information 11STST??

A person INPUTS information into the computer to tell it what

to do.

Input – is either a program or data

? Which is “input” into the computer first – programs or data?

Data – Specific information you put in the computer in some way – like the information in a letter.

Program – a list of instructions written in a language the computer understands – Example – Microsoft works, solitaire

How do you input information?How do you input information?

By using an INPUT DEVICEBy using an INPUT DEVICE

Input Device – something that puts

information into the computer

Examples of input devices

Keyboard

Mouse Modem

Joystick

Light Pen Scanner

Bar Code Reader

Input device definitionsInput device definitionsScanner – – used to turn pictures or documents into used to turn pictures or documents into

groups of dots and transfer them to the computer – groups of dots and transfer them to the computer – similar to a copy machinesimilar to a copy machine

Bar Code Reader – – a wand or screen that uses a light a wand or screen that uses a light source to read the bar code characters – like when they source to read the bar code characters – like when they scan your groceries.scan your groceries.

Keyboard – a device resembling a typewriter – a device resembling a typewriter

Modem – an input and output device that lets two computers communicate with each other.

INFORMATIONS’ INFORMATIONS’ SECONDSECOND STOP STOPThe computer PROCESSES the information using the

CPU.

Sorts InformationAlphabetically

By Specific Directions

Compares InformationIs this number or phrase <, =, > ?

Arranges Information

Calculates InformationAdds,

Subtracts, Divides,

Multiplies, Etc

Informations’ next stop (3)Informations’ next stop (3) YOU tell the computer to YOU tell the computer to STORESTORE

the information in the the information in the correctcorrect place. place.

Where?

Network Server –

Your Personal Folder?

Diskette?Your

Computers’

Hard Drive?

Informations’ Informations’ FinalFinal Stop Stop The computerThe computer OUTPUTSOUTPUTS information by giving us the information by giving us the

results of the data processing so that we can see it.results of the data processing so that we can see it.

How does the computer output the information?

Screen or Monitor

Through OUTPUT DEVICES

Printer Modem

What makes up a Microcomputer System?

Hardware

Software

Storage

What is Hardware?Anything connected Anything connected

to the computer that to the computer that you can physically you can physically touch.touch.

Mouse

Keyboard

Printer

Monitor

Scanner

Disk Drive

What is Software?

Instructions that tell the computer what to do

There are two types of software.

Operating Software – directs all the activities & sets the rules for how hardware and software work together

Applications software – software pack gages you by to perform certain tasks – Examples: Microsoft works, Solitaire, Excel, Publisher

Application Software we will use Application Software we will use and learnand learn

Microsoft Integrated Software Package

Word Processing – allows you to insert and delete text; helps you write letters, memos, etc.

Spreadsheet – helps you process financial or mathematical information

Database – helps you organize, find and display information in different ways

Desktop Publishing – helps you enhance and create newsletters, flyers, and brochures

Power Point – presentation software – allows you to combine text, graphics, and sound to create a professional look in an electronic slide show

What is Storage?What is Storage?Devices that allow you to save your info

Types of Storage Devices

Diskette – floppy – stores 1.44 MB

CD – stores 650 MB or equivalent of 470 diskettes

Hard disk – permanently installed in the computer; comes in different sizes

Laser Disc – holds major amounts of info; looks like a large record – only silver

What are the two types of Computer Memory?

RAM – A kind of memory that is lost when – A kind of memory that is lost when the power is cut off. You CAN change the power is cut off. You CAN change RAM.RAM.

ROM – Memory that is not lost when the – Memory that is not lost when the power goes off. You can read ROM, but power goes off. You can read ROM, but you cannot change it. ROM holds you cannot change it. ROM holds instructions for the computer that are instructions for the computer that are necessary for it to work.necessary for it to work.

What is a Network?A Network is a system of computer linked together to

share information and hardware.

There are 2 different kinds of Networks.There are 2 different kinds of Networks.LAN and and WAN

LAN – Local Area Network

Used to connect devices within a building or on a

campus

LAN Example

Server

WAN Network ExampleWide Area Network

Used to connect computers

Over long distances