HARDWARE

• Lesson Objectives

• To understand what input and output devices are, and how they are used

• The understand the difference between input and output devices.

HARDWARE

• Input Devices

An input device is used to get data in to a device.

THINK – How many different ways can you think of to enter data into a computer?

PAIR – Talk to the person to your left. How many can you come up with together?

SHARE – Share your ideas with the class

HARDWARE

• Output Devices

An out device is used to output data that has previously been entered into a computer

THINK – How many different ways can you think of outputting data from a computer?

PAIR – Talk to the person to your left. How many can you come up with together?

SHARE – Share your ideas with the class

HARDWARE

• Task 1:

Use the worksheet to label the diagram.

Make sure that you • show whether the device is an INPUT or OUTPUT

device.• Name each device• Describe what the device is used for

HARDWARE

• Input Devices

Key boardKnown as the

“Qwerty” keyboard because of the layout of the letters on the

first row.

MouseInvented in 1963, and

is now the most common form on

input. Used to highlight, select and edit using sensors on

the bottom

CameraWeb cams are now

on most PCs and Laptops. Used for

social networking or Skype but also may be used for iris or facial recognition

MicrophoneUsed to input sound

and control the computer using voice recognition software.

ScannerUsed to digitise

images. They make a digital copy of data.

HARDWARE

• Output Devices

SpeakersSound is output

through use of speakers or headphones. In

industry speakers are used as a warning, for example in hospitals

PrinterThese are used to produce a

hard copy of information. There are different types

including fast laser printers and cheaper ink-jet printers which are more common in

the home.

MonitorMost systems will have

some kind of visual output that requires a monitor. LCD

and LED are the most common flat screen

monitors

HARDWARE

• Task 2:

There are many other input and output devices that you need to know about

Complete the table on the reverse to fill in other input/output devices that you may already know.

Use the BBC Bitesize>GCSE>ICT>Hardware revision section to help you fill in the rest.

HARDWARE

• Other Devices

Graphics TabletA graphics tablet consists of a flat pad (the tablet) on which the user draws with a special pen. As the user draws on the pad the

image is created on the screen. Using a graphics tablet a designer can produce very accurate on-screen drawings as if they were

drawing on paper.

PlottersA plotter is a special kind of printer often used for producing

complex technical line drawings which need to be really accurate. The plotter is like a robotic arm and a series of pens which draws

the image on a large piece of apper

RFID (Radio-Frequency Identification)These are often used in shops to track items past sensors,

e.g. baggage handling in airports, toll booths, car park access or in pet identification chips

INPUT

OUTPUT

INPUT

HARDWARE

• Other Devices

SensorsSensors are used on a wide range of applications including

temperature, water level, light, pressure and motion sensors. Sensors are often found in computer control and more modern

aeroplanes use sensors to provide automatic feedback.

Barcode ReaderBar code readers are used to scan barcodes from labels to identify

an item and retrieve the data from a database

MicrophoneMicrophone are used to input sound and can be used to control the

computer using voice recognition software

INPUT

INPUT

INPUT

HARDWARE

• Other Devices

Touch ScreenAlternative to a mouse or keyboard. Senses the users touch. Often

used in phones, tablets, kiosks etc.

JoystickJoysticks used to be popular with gamers but have slowly been

replaced by other types of game controller. In construction, joysticks are used to control machinery such as cranes.

ActuatorsA computer system being used to monitor and control a mechanical

system will need some way of outputting a physical change. In aeroplanes, actuators are mechanical devices which adjust various

parts of the system such as flaps or engines based on the data input.

INPUT

INPUT

OUTPUT

HARDWARE

• Task 3

Answer the exam style questions about input and output devices

HARDWARE

• Quick Fire Questions

Input or output?