Personal computer hardware [Part 2]

Main memory

It is a fast storage that is directly accesible by the processor. The main memory is used to store the currently executing program and instantly needed data.

Hard disk

They storage data and programs even when there is no power but they require power to perform write and read usage.

Visual display unit

Also called computer monitor or just display, the visual display unit is a piece of electrical equipment which displays images from the computer.

Types of stationary computers

Workstation

It is a personal computer designed for mathematics, science, finances... Only one person can be using it at the same time but the are often connected to local networks and they usually run multi user O.S.

Desktop computer

They normally have a regular use and as they usually don't fit on a desk, they are usually put under it. Casual users are the ones who use them the most.

Gaming computer

They are the same as desktop computers but they have better hardware such as a better processor, memory and video card. Gaming computers are used to play videogames but they are also used for video rendering, graphic design... because of their high specifications.

Single unit

Those computers are also known as all-in-one computers because they combine the monitor and the case of the computer in a single unit. Sometimes, the monitor uses a touchscreen as a method of user input but they are always optional.