1.1 system architechure

1.1 system architechure

1. internal componants

   • processor
   • main memory
   • buses
   • I/O controllers

2. External componants

   • keyboard mouse printer disk drives
   • seconday storage
     • O/I Devises/Parts

3. The brains of the computer

   • carries out instructions
   • processes data

4. RAM holds data and instructions that are currently in use by processor

5. ROM when power is off instructions remain in the ROM chip

6. systems buses

   • parallel wires
     • Data Bus Address Bar Control Bus
   • Peripherals are devices that don't connect to the CPU
     • mouse keyboard printer