what are the four basic operations in a computer? define each of them with the help of block diagram. ​

At a fundamental level, computers operate through these four functions: input, output, processing, and storage.

Explanation:  Input is something entered into a machine or other system, the act of entering data or other information, or input can also describe giving one's help, advice or thoughts.

Output is defined as the act of producing something, the amount of something that is produced or the process in which something is delivered.

An example of process is the steps taken by someone to clean a kitchen. An example of process is a collection of action items to be decided on by government committees. noun.

A storage device is any type of computing hardware that is used for storing, porting or extracting data files and objects.

the legal limit for the drivers who can drive after consuming any amount of alcohol is 21 years.

explanation:

on november 1, 1996, a "zero tolerance law" was put into effect in the new york state.

according to this zero tolerance law, for people under the age of 21 years, it was illegal to purchase and possess alcohol or to drive after consuming any amount of it.

also, the alcohol involvement rate for the drivers under the age of 21 was roughly twice that of elderly drivers.