Today you will

• sort devices into input and output
• do a quick check of how you sit at your computer
• make a list of the devices you can use for your Something Real project

Warm-up

Look at the computer in front of you. Name one part that sends information in and one part that sends information out.

• An input device sends information into the computer, like a keyboard or a webcam.
• An output device shows or plays the results for you, like a screen or a printer.
• A peripheral is an extra device you plug in, like a USB headset.

Example

You type your Work Experience log on a keyboard. That is input. Then you print your CV. That is output.

Check how you are sitting

Ergonomics means setting up your seat and screen so your body doesn't get sore.

• Put your feet flat on the floor and sit back so your back is supported.
• Have the screen near eye level, about an arm's length away.
• Keep your wrists straight and your shoulders relaxed when you type.
• Stand up and stretch every 20 to 30 minutes.

You will write about your seat and screen later.

Your teacher will go through the first few cards with the whole class. For each card, ask the same question: does it send information in, or send results out? Then drag the rest of the cards yourself in the box below and click Check.

Common snags

• Is a screen input? A plain screen is output. Only a touchscreen also takes input, so today treat a screen as output.
• Webcam or projector? A webcam sends video in. A projector sends a picture out onto the wall.
• Are your neck or wrists sore? Do the posture check again and fix one thing.