the CPU

the CPU

1. ALU

   • simple adding and subtracting
   • * and /

2. ALU

   • * and /
   • simple andition and subtration
   • Arithmatic Logic Unit

3. is the brain of the computer

   • sits on motherboard
   • follows the fetch exacution cycle
     • fetch, decode, execute
       • fetch, copy memory address from the program counter to MAR (memory data regiter)
         • decode the instruction in the MDR (memory data register) is decoded by the CU (control unit)
           • execute, the instruction is preformed. this could be load data from memory do caluculations or logic

4. CU

5. computer networks, connections and protocalls

   • wireless encryption
     • encryption, wireless networks are identified with a unique service set identifier (SSID). the SSID must be used by all devices that want to connect to the and can be set automatically broadcast to any devices in range of a WAP.
       • wireless networks broadcast data in order to be secure - this is done