Memory Devices

Memory Devices

1. The difference between RAM and ROM

   • RAM- Random Access Memory. It stores data temporarily and loses all of the data when the computer is switched off.
   • ROM- Read-Only Memory. It stores data on your computer permanently.

2. HDD

   • Hard Disk Drive
     • Reads and writes data stored on metal platters.
     • Computer Peripheral.
     • Bits of data are arranged into small concentric, circular paths called tracks.
       • Each track is then broken up into smaller parts called sectors.
     • Two types
       • Hard drive
         • Uses one or more rotating discs and rely on magnetic storage.
       • Solid State Drive SSD
         • No moving mechanincal parts but uses a flash memorylike in a USB flash drive.

3. Difference between RAM and HDD

   • RAM stores data temporarily
   • HDD stores data permanently.

4. RAM

   • Random Access Memory
     • You can access it randomly
     • Found in servers, PCs, smartphones, tablets, printers and other devices.
     • Loses data when the computer is switched off.

5. ROM

   • Read-Only Memory
     • Stores data permanently.
     • Contains programming that's needed to start a PC
       • This is essential for boot-up.
     • It performs major input and output tasks.
     • Holds programme or software instructions.