ICT > Hardware
A processor or microprocessor is built into a microchip that has memory and other components built into it. The microchip itself is often referred to as the ‘processor’. If there is more than one processor built into the microchip, then the microchip is referred to as the ‘processor’ and processors built into it are referred to as cores.
The graphics card which is also known as video card or display card is housed within the system unit, and controls the signals going to the monitor screen. Higher quality cards can produce very clear graphics very quickly. Some computer games demand advanced display cards and high-quality monitor screens.
A sound card controls all input and output of audio. Audio input through a microphone and output through speakers are usually analogue and the sound card handles their conversion into digital signals processed by the computer. It also handles digital audio input, e.g: from multimedia applications.