Common features

Common features

1. Processor

   • In all digital devices
   • Controls all functions of the device.
   • There are specialist microprocessors for different devices.

2. Internal Memory

   • Stores programmes instructions
   • Different devices have different kinds of internal memory
   • Measured in bytes
   • 1 byte
     • 1 kilobytes= 1000 bytes
       • 1 megabyte=1000 kilobytes
         • 1 Gigabyte=1000megabytes
           • 1 Terabyte= 1000 Gigabytes

3. Flash memory

   • Type of Peripheral device.
   • Does not loose data when turned off
   • No moving parts- so not easily damaged
   • Removable and can be used to transfer data between devices
   • Types of flash memory.
     • SD- Secure digital card
     • Mircro SD cards
     • SDXC- Extended capacity card.
     • Usb stick
     • Memory stick
     • Floppy disk
     • SDHC- secure digital high capacity device.