Lesson video

Hello, everyone.

My name is Mrs. Jenkins.

I can't wait to learn with you today.

Welcome to today's lesson from the unit Computer Networks.

Today's lesson is called Digital Devices.

And by the end of today's lesson, you'll be able to describe how digital devices work.

Before we begin today's lesson, we have some keywords.

These words will appear throughout the lesson, so it's really important that we know what they mean before we get started.

The words are digital device, input, process and output.

A digital device is an object that uses computer technology to work.

It stores and processes information, so that's digital device.

Input is data that is sent to a programme to be processed, and that was input.

Process is a programme or part of a programme which is running on a computer.

That was process.

An output is a result of data processed by a computer, so that was output.

You'll see these words appear throughout today's lesson.

They will be in bold, so keep an eye out for them.

And just a reminder, the words are digital device, input, process and output.

Have a go.

Today's lesson has two learning cycles.

We have compare and organise digital devices and recognise input, process and output.

We are going to begin by looking at the first learning cycle, compare and organise digital devices.

I'm going to show you some objects now, and I want you to be having a think about what all of these objects have in common.

We have a laptop and a TV, a computer and a smartwatch.

We have a network switch and a games console.

We have a car and a mobile phone.

We have a digital camera.

We have a router and a satellite navigation system.

So what do all of these things that I have shown you have in common? How did you get on? I asked you what do these things have in common? All of the things I have shown you are digital devices or have digital devices inside them to help them work.

Here are some examples of non-digital devices.

We have a bike, a lamp, a pencil sharpener, a cello, and a torch.

Here are some examples of digital devices.

We have a mobile phone, a laptop, a camera, and a games console.

Aisha is asking, "What is a digital device?" A digital device uses computer technology to work.

It stores or processes information.

What do all of these things have in common? So here are some of the things we looked at earlier.

A computer, a camera, a smartwatch, a satellite navigation system, and a smartphone.

All of these things are digital devices or use digital devices inside them to make them work.

Sofia asks, "Why is a torch in the non-digital device group?" That's a really good question, Sofia.

I think Jacob knows the answer, "A simple torch is an electrical device but it is not a digital device.

It does not need computer technology to work." Great answer, Jacob.

Thank you.

True or false, a torch is a digital device? Have a go.

I asked you, true or false, a torch is a digital device? It is false.

A torch is an electrical device, but not a digital device.

Can you have a go at sorting these items into two groups? We have got a computer, a smartphone, a lamp, a camera, a cello, a bike, a torch, a games console, and a pencil sharpener.

Have a go.

How did you get on? I asked you to sort these items into two groups.

Why did you sort them the way that you chose to sort them? Can you explain to your class? They could have been sorted like this.

We could have sorted them into digital and non-digital devices.

So we've got a phone, laptop, games console and camera in the digital side, torch, bike, lamp, cello and pencil sharpener in the non-digital side.

Okay, which of these is a digital device? A, a computer, B, a bike, or C, a torch? Have a go.

How did you get on? I asked you which of these is a digital device? A, a computer, B, a bike, or C, a torch? The answer is A, a computer.

We're going to move onto Task A now.

I would like you to sort these pictures into digital devices and non-digital devices.

So we have got camera, a notebook and pencil, a broom, a laptop, a satellite navigation system, a scooter, and a phone.

Have a go.

How did you get on? I asked you can you sort these pictures into digital devices and non-digital devices? So we had a camera, notebook and pencil, a broom, a laptop, satellite navigation system, a scooter, and a mobile phone.

Here we have them sorted.

In the digital devices, we have the camera, laptop, mobile phone, and satellite navigation system.

In the non-digital devices, we have a notebook and pencil, a broom, and a scooter.

Great job, everyone.

We're now going to move onto our second learning cycle, recognise input, process and output.

Sofia has got some questions for us.

She asks, "What is an input?" Inputs are items that take in information, including buttons, keys, touch screens, cameras and microphones.

Can you think of any other items that might be an input? She's also asked us now, "What is a process?" A process is the instructions the device follows, like performing a calculation or taking a photo.

She also asks us, "What is an output?" An output is the result of an input and process, including showing text or images on screen, playing music through speakers and switching on lights.

Can you think of any other examples of an output? Digital devices must have an input, process and output.

Here is an example.

An input, you press a button on the keyboard.

The process, the computer follows a programme that tells it what to do when you press a button.

And the output, you see the letter on the screen that matches the button that you pressed.

I would like you now to have a go at matching the word to the action.

So the words we have are input, process and output.

The actions: a computer follows instruction, writing is displayed on screen, and a mouse click.

Have a go.

How did you get on? I asked you to match the word to the action.

So the words we had, we had input, process output.

And the actions: a computer follows instructions, writing is displayed on screen, and a mouse click.

So here we have the matched.

For our input is a mouse click.

The process, the computer follows instructions.

And the output, writing is displayed on screen.

Great job, everyone.

We have another example here of an input, process and output.

The input, one ball in, the process machine was to double it, and the output gives us two balls because double one is two.

We've got another example here.

What do you think happens in this process? The input is 10, we don't know the process yet, and the output is 20.

Have a go.

How did you get on? I asked you what happened in the process where the input is 10, something in the process, and the output was 20.

We needed to double the input.

The process was double the input.

So our input is 10, if we double the number, our output is 20.

True or false, an input is the last thing the machine does? Have a go.

How did you get on? I asked you true or false, an input is the last thing the machine does? And the answer is false.

An input is the first thing that happens.

The input tells the process what it is going to be doing.

Here we have an example of the process of a digital camera.

So we press the button for the input, the process is to take the photo, and the output is that an image appears.

Okay, so we've got our input, process and output there, and that shows us how a digital camera works.

Okay, we are going to move onto Task B now.

I would like you to choose one of the following digital devices and I'd like you to write or draw its input, process and output.

So we have a digital camera and a computer.

Have a go.

How did you get on? I asked you to choose one of the following digital devices and write or draw its input, process and output.

We had the choice of a digital camera or a computer.

Here we have the example of the digital camera.

The input is press the button, the process, use settings to capture the image, and output, the image appears.

For a computer, the input is use keyboard, mouse or touch screen, the process is the computer runs a programme or task, and the output, something happens on screen or a sound plays.

So that is our computer example.

Great job, everyone.

You have worked so hard today.

Well done, everyone.

Let's summarise our learning from today's lesson.

A digital device uses computer technology to work.

It stores or processes information.

Inputs are items that take in information, including buttons, keys, touch screens, cameras and microphones.

A process is the instructions the device follows, like performing a calculation or taking a photo.

Outputs are the result of input and process, including showing text or images on screen, playing music through speakers, and switching on lights.

Great job, everyone.

Hope to learn with you again soon.