Summary

What makes computer , computer ?

1- Input

• Mouse
• Keyboord
• Camera
• Microphone

2- Storage

• Memory
  3- Processing
• Using algorithm as streem of command .

4- Output

• Text
• Video
• Photo
• Sound

  oldest computer made out wood and metal and geers .

How computer work : Binary and Data

## Computer work on ones and zeroes ( 0 / 1)

** Insid computer wires and circuits carry all the informations in computer. **

## How do we store or represent informations using electricity ?

The single wire can be :

• on / off .
• yse / no .
• 1 /0 .
• True / false .

### - With bits we can represent complex informations

** Decimal system (9 digits ) ** ** Binary (0/1 ) ** ** The larger wire means larger informations to store **

How computer work : Circuits and lOgic

Every input and output is type of information ca be presented in on / off electrical signals(0/1) .

• we use circuits to mdified and combiend input signals and flips it .

• Complicated circuits take multiple signals and combined them to give different outputs .