All programmers should at least be aware of some keyword.

Programming 

Programming is a very natural and intuitive concept. A program is nothing more than a series of statements written in a specific language. Programs are everywhere, and even the technophobes of the world use programs every day. Driving directions, cooking recipes, football plays, and DNA are all types of  programs.

pseudo-code.

 Pseudo-code is simply English arranged with a general structure similar to a high-level language. It isn’t understood by compilers, assemblers, or any computers, but it is a useful way for a programmer to arrange instructions. Pseudo-code isn’t well defined; in fact, most people write pseudo-code  slightly differently. It’s sort of the nebulous missing link between English and high-level programming languages like C. Pseudo-code makes for an excellent introduction to common universal programming concepts.

CRYPTOLOGY

Cryptology is defined as the study of cryptography or cryptanalysis. Cryptography is simply the process of com-
municating secretly through the use of ciphers, and 
cryptanalysis is the process of cracking or deciphering 
such secret communications. Historically, cryptology has been of particular 
interest during wars, when countries used secret codes to communicate with 
their troops while also trying to break the enemy’s codes to infiltrate their 
communication





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