What is binary number system? What be the relation of binary number system and computer system?

The number system with two base or radix and has just 2 digits: 0 and 1which are known as BIT (binary digits) is called binary number system.
This number system has important relation with computer system as the computation in computers runs according to this number system. '1' in computer's circuit mean on' and '0' mean off. So, the processer processes the data switching the circuits on and off with the help of binary calculations. So,...

What is a computer system ? Name basic hardware components of a computer system. 

A computer system is a combination of all the functional components of a computer and its associated hardware that work together to accomplish one or more common goals.

A typical computer system consists of the following hardware components to accomplish the above task :

• Input devices
• Central Processing Unit
• Output devices
• Storage devices

State whether the following statements are true or false.

a.    When a hard disk of a computer system get damage or lost, we don't lose any data and information.
        - False

b.    Sometime by mistake user can delete important files.
        - True

c.    Hardware securing means securing hard disk from being damaged.
        - True

d.    Dust, fluctuation of electricity and overheat can damage hardware of the...