Keyboard-

it consists of a set of keys ,the component through which a user can either enter a program , put necessarry data and interact with the computer through appropriate commands .It contains few or large no. of keys depending on the type of work . eg. ASCII... etc

Keyboard interface-

the keyboard operation ,ie pressing of keys doesnot usually generate s/nls which can be directly used by the computer operation controller , it is necessary to transform the switch closure information into a format that can be recognised by the computer. It can be done by a keyboard interface which takes the input from the keyboard and generates outputs in suitable format based on information which is characteristics of key pressed.