How do computers 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 rither 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 gigabyte= 1,000,000,000 bytes 

1 terabyte= 1.000,000,000,000 bytes.

How much data?

10 bytes= one word

2 kilobytes= one typewritten page

100 kilobytes= a low-resolution photograph

1 megabyte= a short noval

2 megabytes= a high-resolution photograph

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

1 gigabyte= 17 hours of digital music

10 terabytes= all the printed works in the Us Library of congress (the world's largest library)

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