How do computer store data?

How do computer store data ?

 All the data stored in your computer - every word, picture, number, and sound - is captured as a series of electrical pulses that are either on or off. A number system called binary is used to represent these pulses with "1" meaning  "on" and "0" meaning "off". A single binary digit , known as a "bit", switches a single switch on or off. By linking together these switches, the computer can carry out the complex operations we demand.

       Bits and bytes

                                    

                    1 bit = a binary digit, either 1 (on) or 0 (off)

            

  1 byte      =         8 bits

       1 kilobyte =   1,000 bytes

             1 megabyte = 1,00,000 bytes

                        1 gigabyte =    1,000,000,000 bytes

                            1 terabyte = 1,000,000,000,000 bytes

                    

 How much data?

10 bytes = one word

2 kilobytes = one type written page

100 kilobytes = a-low resolution photograph

1 megabyte = a short novel

2 megabytes = a high-resolution photograph

100 megabytes = a novels 1m (3ft) long

1 gigabyte = a digital music

10 terabytes = all the printed work in the US Library of Congress (the world's largest library)