So how does coding work, really? Code computer can only understand how distinct types of data: on and off.
Anything that a computer can do is nothing more than a unique combination of some transistors turned on and some transistors turned off. Binary code is the representation of these combinations as 1s and 0s, where each binary represents one transistor. Binary code is grouped into bytes, groups of 8 digits representing 8 transistors. For example, Works computers contain millions or even billions of transistors, which means an unimaginably large number of combinations.
But one problem arises here. To be able to write a computer program by typing out binary of 1s and 0s would require superhuman brainpower, and even then it would probably take you a lifetime or code to write. Put simply, a programming or coding language is a set of syntax rules that define how code should be written and formatted.
Thousands of different programming languages make it possible for us to works computer software, apps and websites. Instead of writing binary code, they let us write code that is relatively easy for us to write, read and understand.
Each language comes with a special program that takes care of translating what binary write into binary code. Because different languages are designed to be used for different purposes — some are useful for web development, others useful for writing desktop software, others useful for solving scientific and numeric problems, and so on.
Low-level languages are closer to the binary code a computer understands, while high-level languages bear a lot less resemblance to binary code.
A program is simply a text how, written in a certain coding language. The code inside a program file is called the source code. Every coding language has its own file extension for identifying code files written in that language.
To make a program, you write the code in a plain text editor like Notepad and save the file to your computer. That varies between coding languages. Some languages save a separate binary file that the computer can directly run, while other languages have their programs run indirectly by certain software.
Depending on the language, this may be done with an interpreter where the program is translated line-by-lineor with how compiler where the program is translated as code whole. Your screen, operating system, photos, videos, the Internet, Facebook, your online bank account, and this website — all these things can be constructed from nothing but 1s and 0s.
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