What does a processor actually do?
The processor, CPU (Central Processing Unit) is the heart of any Hardware, without him nothing works.
- Each command to the processor is sent in a combination of the two Numbers 0 and 1. These commands are sequentially processed by the CPU.
- The CPU processes the processes in the binary machine language: simply put, the "0" on it for "no" and "1" for "Yes"
- In addition to the operational commands, the processor also responds to unforeseen results. These are sent using Interrupts (interrupts) to the CPU. The processor then interrupts its current job, it saves the values and first of all the unforeseen event. Then he turns back to his original command.
As a processor works
A processor processes commands in four steps, described by John von Neumann as early as 1945: Fetch, Decode, Fetch Operands, and Execute.
- Fetch: the First is read from the command line, register in the memory the address of the next command in the command memory is loaded.
- Decode The command decoder decodes the command and activates all of the Circuits which are necessary for the execution of the command is necessary.
- Fetch Operands: Now all the values and parameters of the command are loaded into the registers to be changed. The processor finds these values on the hard disk, in the Cache or in memory.
- Execute: The process is running. This can be, for example, the control of a peripheral device such as a printer, or an Operation in the arithmetic unit.
- After the completion of the Execute cycle can start all over again, so it may be the next command processed.
Without a processor, anything goes
In addition to the CPU, the memory has an important function in the Computer. What RAM exactly does, we will explain in this article. In addition, we have over 100 Desktop processors tested.
