Unit 4 T1 Input and output devices

1. Input and output devices

By Michael Harrington

Fill in the Blank

Show you know the lesson objectives. Fill in the missing word

Understand what is meant by an input <?>

Fill in the Blank

Show you know the lesson objectives. Fill in the missing word below <?>

Understand each of the following input devices and why they are required

Keyboard

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Optical mouse

Touch screen (resistive, capacitive and infra-red)

Open Ended

Think about the computer devices in the room you are in or a room in your home

What input devices do you use to interact with these devices?

Open Ended

A key is made from plastic and has a small peg underneath. Why is there also small piece of rubber under the key?

Labelling

Add the labels to the correct place. As shown in the lesson slides diagram.

Drag labels to their correct position on the image

PG online

Keyboard

Conducting

Contact

typing

the letter is pressed

Insulating layer

wires

smal bar

Layers

Multiple Choice

What does LED stand for? (use the internet to research this if you need to)

• Liow Emitting Diode.

• Light Emitting Diode

• Light Energy Diode

• Light Emitting Died

Open Ended

What causes the coil to vibrate in the microphone?

Open Ended

What does ADC mean and what does it do?

Ask Mr H to show you some example answers if you need help​ to answer the next questions.

Open Ended

Explain why microphones are required in the following situation:

A recording studio

Open Ended

Explain why microphones are required in the following situation:

A voice assistant such as Google Assistant or Alexa

​On your class notebook Input/output

Now complete the task questions

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Subject | Subject

Can you show you understand what is meant by an input device​?

Multiple Select

Almost all touchscreen phones manufactured recently use a capacitive touchscreen

What are the advantages of using capacitive touchscreens?

• Capacitive screen have a smooth surface

• Capacitive screens work if the user is wearing gloves

• They are very easy to press

• They are highly accurate

Multiple Select

Almost all touchscreen phones manufactured recently use a capacitive touchscreen

What are the disadvantages of using capacitive touchscreens?

• Capacitive screen have a smooth surface

• Capacitive screens don’t work if the user is wearing gloves

• They are very easy to press

• They are highly accurate

Multiple Choice

What does LED stand for? (use the internet to research this if you need to)

• Liow Emitting Diode.

• Light Emitting Diode

• Light Energy Diode

• Light Emitting Died

Open Ended

How does an Infra-red touchscreen know coordinates of where the screen was touched?

​On your class notebook Input/output

Now complete the task questions

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Subject | Subject

Can you show you understand what is meant by an input device​?