A computer has several key characteristics:
It is automatic, meaning it will perform tasks without human intervention once started. It is extremely fast, able to perform calculations in milliseconds. Computers are also very accurate in their calculations. Unlike humans, computers can work continuously without getting tired or losing concentration. Computers are also versatile, as their capabilities can be changed by loading new programs. They have enormous memory and storage capabilities to store and recall vast amounts of information. However, computers have no intelligence or feelings of their own - they must be programmed with logical step-by-step instructions to perform tasks.