Hardware_Pointinf devices, scanners and readinf devices

Give three examples of pointing devices

• Pen/stylus

• Trackball

• Keyboard

• Touch screen

• Headphones

What are pointing devices used for in general when working with a computer?

• To point at things.

• To open an application on the screen

What type of pointing device is often used by artists?

• Pencil

• Stylus

• Ink pen

• Tablet

Why is a pen/stylus ideal for artists?

• It's more comfortable

• It's more ergonomic

• It's more accurate than a mouse

Describe three actions you can perform on a touch screen, that you cannot perform with a traditional pointing device such as a mouse.

• Watch movies, listen to music and play games.

• Zoom, pinch, swipe

What does it mean when we say a tablet is 'multi-touch'?

• You can touch multiple things on the tablet.

• The tablet has no buttons so that you can have more touch area.

• You can use more than one finger to interact with the screen at the same time.

Explain the difference between a flatbed scanner and sheetfed scanner in terms of what they scan.

• Flatbed scanners look like snackwhich makers and sheetfed scanners eat paper.

• Flatbed scanners scan images, photos and documents and sheetfed scanners cannot scan books.

Give the benefits of using Barcodes and barcode scanners, rather than keyboards, for entering the prices of items in a shop.

• Barcode scanners are more accurate than human input.

• Barcode scanners can scan each item in the shop.

• Barcode scanners are quicker than humans and update the database automatically.

Some devices are classified as biometric devices. Explain what rhus means.

• Those devices use your biological features as a password to.

• Those devices scan biological things to collect data.

List two examples of biometric input.

• Scanning your iris

• Scanning a pet's RFID tag

• Using your fingerprint to unlock your phone.