Revision

Revision

1. Central processing unit

2. The brain of the computer

3. Fetch, Decode, Execute cycle

   • Data bus

4. Responsible for executing a sequence of stored instructions called a program

5. Computing Hardware

   • Binary Logic
     • 128 64 32 16 8 4 2 1
     • 10011010 = 154
     • All the numbers add up to 255
     • Base 2
     • Denary
     • Hexadecimal
     • logic gates
     • 10010010 = 146
   • Input and output devices
     • Input
       • Keyboard
       • Mouse
       • OMR (Optical mark reader)
       • Scanner
       • Joystixk
     • output
       • Speakers
       • Moniter
       • printer
       • Projector

6. can be found in desktop or laptop computers, many electronic devices such as Mobile phones, DVD players and washing machines

7. ALU (Arithmetic and logical unit)

8. Dual core processor