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HOW COMPUTERS WORK

1. We know that computer systems consists of a collections of devices (hardware) controlled by a computer program (software). But what actually happens inside the computer to cause all these thing things to work together?

How does a program control the hardware.
How is data stored in the memory of a computer.

2. This lesson provides the answers to these and other questions regarding the fundamentals operation of a computer. So to begin with, we will identify and describe a number of important ideas as a basis for understanding how they fit together to make a computer.

Binary Numbers

3. There is a single concept that can be said to be the basis of the operation of modern digital computers, then it must to be binary numbering system. Incredible, as it might seem, the operations of the computer is based entirely on the numbers 0 and 1; a computer does arithmetic using only the numbers 0 and 1; indeed, the notorious logical abilities of a computer rely solely on the numbers 0 and 1. You will therefore conclude that we need to spend a bit of time on this extremely important subject.