What is Computer ?

The computer is a machine with the ability to calculate the mathematical problem but it cannot make a decision to choose, base on its own judgement. The computer can make a decision by means of comparing an object to its  example. Before the computer makes any decision, the computer is  searching for an available example  to compare it to an objects.

And  when  the  computer  realized  that an  object and the example are alike, and will then,  computer will  makes a decision  that the object and the example are  is truly alike, The computer will not make any  decision  without any  example or reference.
  In programming, the list of example is placed in variable.

An ordinary human might think that the computer is superb than human, they are wrong because the computer always follows the commands of the human being only.

 Computer are set  to make decision,  for example .

If the computer is set that one is greater than than two. the computer will permanently decide that one is greater than two.
when a computer  gone  into the problem, like the following,

if the computer is ask, like this, "does one is greater than two ?", it will answer, " yes", even though the truth is, that two is greater  than one.

the computer also have the ability to control the moving machine by means of the power of the electricity . a low voltage will   control the high  voltage, and the high voltage will generate magnetism that causes to move the mechanical machine

The computer also have the  ability to communicate with other computer via internet.

I will discuss the parts of the computer later