The fact that electronic computers are now used for data processing has led the general public to believe that it is a mysterious, complicated science and that the computers are
giant brains. Both of these ideas are false. A computer is basically just a high-speed adding
machine that performs the functions it is told to. If the input data are varied even a little,
the computer is unable to operate until it is programmed to accept the variations. The
business operations it performs are impressive only because of the extremely high speed of
manipulation, but most of these operations have been used for decades. Unlike man, the
computer performs repetitive calculations without getting tired or bored.

Which statement best expresses the main idea of this passage?

Group of answer choices

A computer is a high-speed adding machine.

A computer is a mysterious giant brain.

A computer is impressive because of its high speed.

A computer is superior to man in many ways.