COMPUTER HARDWARES

INPUT DEVICES, OUTPUT DEVICES AND STORAGE MEDIA

Recap previous lesson

Parts of computer system

33

2211 Monit

or CPU

Speakers

33

Objectives

be able to identify and state the functions of; Input devices Output devices Storage media

Introduction

Input device? An input device is a piece of hardware

that is used to enter data into a computer.

Input : Enter data

Input : Enter data

Introduction

Output device? piece of hardware that is use to get

information OUT of a computer

Output : Produce results /

data

Output : Produce results /

data

Introduction

Storage device? A device used for storing something

(information/data).

Storage : keep / save

data

Storage : keep / save

data

Input devices

Keyboard

Mouse

Scanner

JoystickInput

devicesInput

devices

Keyboard

a set of alphanumeric and command keys used to input information to a computer

Mouse and Joystick act as a pointing device controlling device

Scanner a device that scans images, printed text,

handwriting, or an object, and converts it to a

digital image.

Output devices

Output devicesOutput devices

Printer

Monitor

Plotter

Projector

Printer

a printer is a device that accepts text and graphic output from a computer and transfers the information to paper.

Monitor

A display screen used to present information from a computer

Plotter

Plotters are a specialist type of printer which is able to draw high quality images on very large pieces of paper, for example 3 foot wide by 10 foot long.

Printer vs Plotter

Printers

Plotters

Storage devices

storage devicesstorage devices

Floppy disks

Hard disk

A zip disk

Pen drive

Storage devices – keep data

Storage media

Capacity Ease of use

Floppy disk 1.44mb ★

Hard disk 40gb ★★★★

Pendrive 2gb to 16gb ★★★★

CD or DVD 700mb / 4.7gb ★★★

Exercise

Sort these devices into the correct column.

* scanner * printer *keyboard * mouse * monitor * joystick * speakers Input devices Output devices

Summary

Always remember: Input device is a device that used to

enter data

Output device is a device which capable of representing information from a computer

Storage media is a device that stores / keep data

Research – Google, search the following devices:

Input devices?Output devices? Touchscreen

Digital camera

Projector

End lesson

Thank you.