Computing Revision

Computing Revision

1. Binary / Denary

   • Binary
     • A number that is expressed in the base-2 numeral system or binary numeral system, which uses only two symbols, typically 0 and 1 .
   • Denary
     • A decimal numeral system for denoting integer and non-integer numbers that is used in computers everyday from powering it on to powering it off.

2. Character Sets

   • ASCII
     • A character encoding standard for electronic communication which represents code text in electronic devices
     • American Standard Code for Information Interchange
   • Unicode
     • Is a constant encoding, representation and handling of text expressed in the most of the worlds writing system

3. Secondary Storage

   • a non-volatile memory that is not directly accessible by the CPU which includes: magnetic, optical and solid state storage

4. CPU

   • Carries out instructions of a computer program by performing the basic arithmetic
   • A central processing unit

5. RAM

   • A form of computer data storage which stores data and machine code that's currently being used
   • Random-access memory

6. Network Types

   • LAN
     • Local Area Network
       • Network that interconnects computers together
   • WAN
     • Wide Area Netwrok
   • WPAN
     • Wide Personal Area Network

7. Computational thinking

   • Flowcharts
     • a diagram of the sequence of movements or actions of people or things involved in a complex system or activity