How is built computer?

Regardless of the features that have different models of products, on all computers at first glance, distinguish these main parts:
1. The Central Unit
2. Monitor
3. Keyboard
4. Mouse
In cases when the main integral parts are separated from each - other, they relate in part back to the central unit through the ad hoc signaling.
Everything that a computer is able to do, is first of all thank the Central Unit (CPU - Central Processing Unit). Central Unit is the heart and brain of the computer and often to mean the computer itself. Let's take a look inside.
We find the Central Unit:
• Microprocessors;
• Hard disk, motherboard, memory RAM, ROM, cache, video cards, sound cards, etc;
• Gates connecting the input device (input);
• Gateway to output devices (output);
• Ports for connecting to a communication network;

Within the Central Unit are evident:
• Hard Disk, the unit that serves to write and read CD/DVD-ROM drive, motherboard, a small speaker that serves to hear the voice, a blower which serves to update the central unit;
• Different cards: the voice, video, network, TV cards etc;

The Voice card

Video Card

Network card

Tv Card

• Source of food;

• Cables and connections

The gates of the central unit with connections to the electrical network, monitor, keyboard, printer, mouse, speakers are distinct, with defined shapes that allow single connection with the respective element.
Gates USB connection (Universal Serial Bus) years are the most used and most successful.
They allow:
1. Transfer of data with a high speed;
2. Any equipment related to those detected within a few moments from the computer.

Motherboard

The motherboard is a plaque with millions of "wire" embossed in which established:
a. The main parts of the computer;
b. Connecting nodes of the main elements of it.
Motherboard realizes the connection between:
• Microprocessor;
• Various types of memories;
• Math coprocessor;
• Circuits that coordinate input devices and exit;
• Parts such as sound cards, video, network etc.
Usually, the information on a computer using two elements:
1. Processor
2. Memory

The processor

Processor (also called the computer and the brain) is the element that translates the Central Unit and uses the guidelines of the program. At that passes, perunohet and then addressed all information.
Small computer (or PC), the processor is a single element and called chip. It has the form of a plate with ribs, not more than four centimeters and mounted on the motherboard. Then microprocessor has undergone numerous changes, in order to increase capacity, speed and type of conversions performed. In 2000 their evolution became big steps especially in the speed of information movement. The microprocessor is distinguished by the number of series to which it belongs, which expresses his level in the evolution of microprocessors.

Memory

Memory is also part of the CPU. It keeps us working condition ready for some information, while computer needs to work or not with it.
In memory, the information is placed in the form of electronics in the integrated circuits. As long as the information is in memory, the computer can act on directly. In practical language, this is called Memory Working Memory (RAM - Random Access Memory). This type of memory retains the information on that, as long as the computer is turned on, so is temporary. Otherwise, it means that, if the computer is turned off or restarted, he loses all this information, unless we made certain preliminary steps to maintain (depozuar) it. The bigger RAM capacity to be so fast and more computer can process information. Today the production of elements of RAM memory capacity is about 3GB.