COMPUTER HARDWARE

COMPUTER HARDWARE

INTRODUCTION : Computer is an Electronic Machine which has Speed, Accuracy, Memory & an ability to be in Network.

SPEED:>>

1 HERTZ (Hz) >> 1 Frequency/sec.

1 KILO HERTZ >> 1000 frequency/sec.

1 MEGA HERTZ >> 1000 * 1000 freq./sec

1 GIGA HERTZ >> 1000 * 1000 * 1000 freq./sec 

TERA HERTZ,  PETA HERTZ,  EXA HERTZ,  ZETTA HERTZ,  YOTTA HERTZ etc.

Today's processors work at speeds of 3 GHz/sec.

3 GHz = 3000 MHz = 300 crore frequency/sec.

MEMORY:>>

1 BYTE = 1 word

1 KILOBYTE = 1024 words = 1024 bytes
1 MEGABYTE = 1024*1024 words = 1024 KB = 1 MB
1 GIGABYTE = 1024*1024*1024 words = 1024 MB = 1 GB
1 TERABYTE = 1024 GB = 1 TB
1 PETABYTE = 1024 TB 
 AND  SO ON COMPUTER HAS A LOT OF MEMORY TO STORE DATA 

NETWORK:>> 

• INTERNET 
  

• LAN (LOCAL AREA NETWORK)