How does a computer program work

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Post on 25-Jan-2017




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How Does A Computer Program Work?

How Does A Computer Program Work?

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The computers that we use on a daily basis are complex devices, a fact that is often ignored by most people. In order for them to run, computers need software, which works in sync with hardware, to enable us to achieve the various functions for which computers are famous. Software on a computer can be defined as the programs or instructions that enable it to function. But, you may be asking yourself how a computer program works.

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How Computer Programs Work

The programs that are on your computer work by telling the central processing unit (CPU) to accept certain input in a certain way and to spit out the output in another particular way. As you might have guessed, the CPU plays an important role in all this in that it is the one that does all the processing and calculations on a computer.

The CPU that is on your PC contains billions of tiny transistors that use electricity to enable them to carry out the binary functionality that defines computer programs. To better understand what we mean, computers use a binary system (1s and 0s) to process and store information. This system is represented by the transistors' on (electricity is applied) and off (no electricity) states. All logic on a computer is implemented by the logic operators "On," "Off," and "And.

Computer programs work by telling the CPU to access input in a given way, manipulate it in another way, and then present the results as desired.

As an example, the calculating programming (calculator), which comes basic with all computers, tells the CPU that is on your computer to accept numeric input from the keyboard. Unlike the word processing application that is being used to write this article, the calculator does not access input that comes in the form of figures.

As you type in the words that you wish to, for example, add, the calculator program tells the processor to display them on your computer's screen. Once you have entered all your numbers and have pressed the equals sign on the application or the key "enter" on your keyboard, the CPU then does the logical calculations and displays the results on the screen.