Low-Level vs High-Level Programming Languages


When we talk about programming languages,
we usually refer to high-level languages. So what is the level about? The level indicates amount of abstraction
between programming language and machine language, which is a set of instructions executed directly
by CPU and is the only language a computer is capable of understanding. A low-level programming language is a programming
language that provides little or no abstraction of programming concepts and is very close
to hardware. A good example would Assembly language or
machine code. Programs written in low-level language are
directly executable on the computing hardware without any compiler or interpreter. With low-level languages, programmer has a
complete control over things like memory allocation, which makes them very efficient. Because of this, they are great for writing
operating systems or firmware. They are however very difficult to use and
the development time is longer. Today, there are many high-level languages,
such as Java, PHP, C# and Swift. The first high-level languages like COBOL
or Fortran were introduced in the 1950’s. They are closer to human language, and because
they have a very strong abstraction, code written in high-level programming languages
is easier to read, write, and maintain. Programmers don’t have to think anymore
about things like registers or memory management. Instead, they can rely on functions, objects
or garbage collector, and other abstractions, which makes the process of developing a program
much simpler. They are also much more independent of a specific
computing system architecture. Needles to say, the edge of level is moving. For a C programmer, Assemby is a low-level
language. And for a Python programmer, C is a low-level
language and so on. Thanks for watching. If you enjoyed this video, please hit that
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