LO1

• communication devices: a hardware device that transmits data from one machine to another using analogue or digital signals.
• computer hardware: the physical components of a computer system.
• the computer system consists of both hardware and software
• input devices: provides data to a computer, such as a keyboard, mouse, or webcam.
• output devices: receive data from a computer, such as a printer, speaker or a projector.
• communication devices: send and/or receive data between computers, such as modems, hubs and switches.
• a touchscreen is both an input and output device, it can be used to input data and also to display data.
• what are the the main types of touchscreen?

  infrared, resistive and capacitive.