Computing Revision

Computing Revision

1. Binary

   • a binary number is a number expressed in the base-2 numeral system or binary numeral system, which uses only two symbols: typically 0 and 1

2. Network Types

   • LAN ( local area network )
   • WAN ( wide area network )
   • WPAN ( wide personal area network )

3. Network Security

   • FAPE ( football playing ape )

4. Character Set

   • A defined list of characters recognised by the computer hardware and software.
     • ASCII
       • ASCII defines as 127 characters
     • Unicode
       • Unicode contains a repertoire of 8589934589 characters

5. RAM

   • Random-access memory is a form of computer data storage that stores data.

6. CPU

   • A central processing unit and carries out a cycle of fetch-decode-execute.

7. Secondary Storage

   • Secondary memory or external memory is a non-volatile memory (does not lose stored data when the device is powered down )

8. Connection Types

   • Bluetooth
   • WiFi
   • Ethernet
   • GPRS

9. Denary

   • The decimal numeral system is the standard system for denoting integer and non-integer numbers