Komputer jako narzędzie pracy

Revise the components of a computer set which you have already learnt (a central processing unit, monitor, mouse, keyboard).

• Which of them is the most important?

• Do you know any other peripheral devices?

BluetoothbluetoothBluetooth

• Bluetooth is a wireless communication using short‑wavelength radio waves. It is used for exchanging data between various electronic devices such as a keyboard, computer, smartphone etc.

Wi‑FiWi‑FiWi‑Fi

• Wi‑Fi is a wireless communication using long‑wavelength radio waves (from several metres to several kilometres). It is used mainly for wireless local area networking. Wi‑Fi is the abbreviation of Wireless Fidelity.

External disc driveexternal disc driveExternal disc drive

• An external disc drive is used for data storing.

Microphone

• A microphone is a device that enables to input audio signals into the computer, e.g. during  speech recording or a voice call over the internet.

Projector

• A projector (image projector) is a device that enables displaying images on a projection screen.

Image scannerimage scannerImage scanner

• An image scanner (scanner) is a device that scans documents and images printed on paper and converts them to digital images.

Graphic tablet

• A graphic tablet is used for creating images and graphics that are input into the computer by hand‑drawing them with a special pen.

PlotterplotterPlotter

• A plotter is a device similar to a printer, but it is possible to print on it images in a very large format, e.g. posters, maps etc.

3D printer3D printer3D printer

• A 3D printer is a device that enables creating three‑dimensional objects.

Interactive whiteboardinteractive whiteboardInteractive whiteboard

• An interactive whiteboard is a whiteboard connected to the computer - and a multimedia projector. It combines the function of a display, a whiteboard and a large touchscreen.

Many peripheral devices can be connected to the computer in order to expand its features. They can communicate with the central processing unit with special cables or wirelessly (via BluetoothbluetoothBluetooth or Wi‑FiWi‑FiWi‑Fi).

Exercises

Glossary

Keywords

bluetoothbluetoothbluetooth

peripheral deviceperipheral deviceperipheral device

Wi‑FiWi‑FiWi‑Fi