What is the keyboard?
A board that have a bunch of keys. The name keyboard also describes the meaning.
But is it the right meaning of the keyboard?
Definitely a big no.
Let's understand the definition of the keyboard :
A keyboard is an input device. Its also known as a peripheral device. This device came with PS/2 Port. As per market demand now its available in USB port as well as wireless also.
The keyboard is used for taking the text input for the computer as an instruction.
PS/2 Port looks like below image

USB Port looks like
