The need of communication:
Communication is the act of sharing ideas, views, feelings between two or more people .It is an unavoidable system, two way process. It can be formal in the meetings ,office and for official works and also informal which is the mode of communication between relatives, friends and colleagues. The basic steps of the communication are sender, encoding, message, channel ,receiver and decoding. The presence of noise in between the process of communication can alter or affect the information between two person. The lack of communication can sometime hamper the relationship among the people and increase the misunderstanding among the time.

The computer communication:
We humans have God's gifted affection for everyone, brain to process, ability to think and basic vital organs to speak and understand each other's language, command and feeling but this doesn't work with computers. As computers are human made machines they don't have the ability to understand human language, process information, interpret it and perform according to the command given by us as they don't understand our language. Computers only understand binary language in the form of 0 and 1 .So any command that is sent to the computer they convert it into binary form and then process it.

The introduction to coding:
The basic command or language that is used to communicate with computers is known as coding. So coding is the way that we use to communicate with computers. Therefore the computer programmers write the code for a particular specific task that they want to implement.
Without coding a computer is totally dumb we can't use cell phones, watch television, and can't telecast anything on television. Even the content that you are reading right now is possible to read from your side because of coding itself.
The code written by the programmer must be clear, specific, concise and have critical thinking in them. A perfect, clear and optimum code will take less time to perform a work rather than writing a burdensome code and clumsy code to perform the similar function in addition to memory usage.

Input and Output:

The code that is written by the user who is client side is the input and the result of the code executed is the output of the code. Every coding done by the user must be correctly written to get the correct and required input, else it returns a different output giving the details of the errors in the code.  

Who can learn coding:
Anyone who has logical ability, mathematical knowledge and critical thinking and is interested in computers  can learn coding by becoming an expert in particular programming languages. Just we need to first learn how these languages work by the compiler and what function they perform.