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1. Instructions are Stored in Memory The first thing to understand about CPUs is this - when programs run, their instructions are stored in
memory. The CPU fetches
instructions from the computer's memory to execute. 2. CPU Decodes the Instruction The next step is for the processor to understand or decode the instruction and
determine what it has to do. Usually what happens is that the CPU will do some
form of computation, then stores it back to memory, the disk, or the
display. 3. How Many Instructions? One question is, how many instructions can the CPU execution per second? Well, this is determined by a of factors, including:
Essentially, the number of instructions a CPU can execute per
second is an indication of its speed and performance. Conclusion Hopefully, this article has helped you understand how a CPU works. The CPU is a central part of any computer system and it is certainly useful to grasp its inner workings well. Related Articles You may also wish to read the following related articles:
Learn how to install a CPU and heatsink
© 2007 Build-Your-Own-Computers.com
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