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 ===== Processor ===== ===== Processor =====
-It is often called “the brain” of the computer. Although it doesn’t think, the processor is the element which controls all other units of the computer. The processor is the device that manages everything in the machine. Every hardware component of the computer is controlled, to some extent, by the main processor. Even if the device has its own processor - for example, a keyboard - it works under the control of the main one. The processor handles events, which can be synchronous or asynchronous. We can say that synchronous events are those that the processor handles periodically. The processor can’t stop. Of course, when it has the power. Even when you don’t see anything special happening on the screen. On a PC with an operating system without a graphical user interface, for example, plain Linux, or in a command box in Windows, if you see only „C:\>”, the processor is working. In this situation, it executes the system's main loop. In such a loop, it’s waiting for the asynchronous events. Such an asynchronous event occurs when the user presses a key or moves the mouse, when the sound card stops playing a sound, or when the hard disk begins transmitting data. For all of those actions, the processor handles executing the programs - or, in other words, procedures.+It is often called “the brain” of the computer. Although it doesn’t think, the processor is the element which controls all other units of the computer. The processor is the device that manages everything in the machine. Every hardware component of the computer is controlled, to some extent, by the main processor. Even if the device has its own processor - for example, a keyboard - it works under the control of the main one. The processor handles events, which can be synchronous or asynchronous. We can say that synchronous events are those that the processor handles periodically. The processor can’t stop. Of course, when it has the power. Even when you don’t see anything special happening on the screen. On a PC with an operating system without a graphical user interface, for example, Linux with a command line interface, or in a command box in Windows, if you see only „C:\>”, the processor is working. In this situation, it executes the system's main loop. In such a loop, it’s waiting for the asynchronous events. Such an asynchronous event occurs when the user presses a key or moves the mouse, when the sound card stops playing a sound, or when the hard disk begins transmitting data. For all of those actions, the processor handles executing the programs - or, in other words, procedures.
  
 A processor is characterised by its main parameters, including its operating frequency and class. A processor is characterised by its main parameters, including its operating frequency and class.
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