Dear friends, when we are going to do any work, the mandatory question should be , why?, Why we are doing this work?, and many sub questions will raise like what will be aspects of it in future, blah, blah, blah..... So in this session I will answer to some of these questions.
It is said that every thing in the world have some reason, if you have proper vision to see this you can find it out yourself. Let's discuss from the digital circuits, You may have come across the word like digital adder, subtractor, digital multiplier circuits and so on.
So the point is if any IC contains some circuits like digital adder, and so on . To choose particular task we will have to first recognize that which operation that we want to do so, for ex., we have to perform addition of two different numbers ( in digital form) we will have to select adder circuits and deactivate remaining all the circuits that are present there. This procedure can be done in various ways, one of way is to provide logic 1 to adder circuit and provide 0 logic to other ones. This can be done by manual operation as well as software operation. If one is going to provide logic 1 to adder circuit manually , then each time he will have to change the connections of hardware for different operations.
So it will be better to choose the circuitry by means of software means. For that one who don't have any knowledge of programming, will find the way of programming little bit tedious. When one actually learns how to program with an compiler, will find easiness of operation. So softwaring will also have great importance as compared to hardwares.
So I hope that one will come to know importance of software by hardware means. It has same analogy to response of our brain with various situations. In this case the hardware is human body and software is any kind of response of brain through which we give our output to surroundings.
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Scientists study the world as it is; engineers create the world that never has been
Theodore Von Karman
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