Programming Languages

1. A programming language

is a formal language used to write instructions that a computer can understand and execute.

A programming language is a set of instructions used to write computer programs. It's the medium through which a programmer communicates with a computer, defining the logic and tasks a computer must perform. Programming languages can be categorized in several ways, but the most common is by their level of abstraction.
It provides syntax (rules) and semantics (meaning) for writing programs. 

Levels of Programming Languages

1. Machine Language

Binary instructions (0s and 1s).

Directly understood by the CPU.

Very fast but difficult to use.