Hard drive

Hard drive

1. RAM

   • Random access memory
   • OS, Applications, Data in current use are kept in the ram for quick access
   • RAM is a volatile memory
     • Data in RAM is not permanently written. When you power off your computer the data stored in RAM is deleted

2. ROM

   • Once data has been written onto a ROM chip, it cannot be removed and can only be read.
   • READ ONLY MEMORY
   • ROM IS A non- volatile mrmory
     • ROM retains its contents even when the computer is turned off.

3. Hard drive

   • Hdd is a secondary memory
   • A hdd is a device that stores all the software installed and data files created.
   • Hard drive is a non-volatile

4. CPU

   • clock speed
     • 1000 million per sec
   • control unit
     • Receives information from RAM and directs
   • Cache
     • high speed memory
       • More memory the faster it will be