Computer architecture

A computer is a complex system, capable of performing various tasksA computer is a complex system, capable of performing various tasks. For that it is composed of a set of hardware and software.
The first are the physical components of a computer: some of these elements materials are used for most transactions, while others are more specific to certain types of tasks.
The elements are sets of software programs that can tell the computer what tasks he must perform, and how to perform:
what are the operating system (like Windows, Mac OS or Linux), and applications that you ask your computer to run.

Tuesday, April 27, 2010

Communication Devices

There are two main types of communication devices, based on the fact it is the heart of the computer to exchange information with one or several other (s) computer (s), or with a human user.
  • Communication with other computers is through network interfaces (seeModule B1.7). Such an interface may be a modem (for modulator-demodulator), which connects a computer to an outlet telephone, a wired network adapter (LAN for Local Area Network), or a wireless network card (or wireless, for "Wireless Fidelity"). These devices may be internal or external. With the democratization of the Internet, more and most PC motherboards have a built-in LAN card
  • Communication with the user who is in front of a machine is made by of input / output (keyboard, mouse, monitor, printer, microphone, speakers, digital camera, video camera...)
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