UNITS 6 AND 7

UNITS 6 AND 7

1. The main parts of a computer system

   • Hardware constitutes the physical element
   • software consists of progams instructions and algorithms

2. computer architecture

   • internal devices
     • power source
     • mainboard or motherboard
     • microprocessor
     • RAM or main memory
     • hard drive
   • external device
     • data input peripherals
     • data output peripherals
     • bidirectional peripherals
   • the architecure of computers refers to the way in wich its physical components are configured and organised

3. computer connections

   • address buses
   • control buses
   • data buses

4. computer memory

   • RAM
     • direct access
     • volatile
     • capacity
     • access time
   • the secondary memory
     • CD, DVD or Blu-Ray drives
     • flash drives

5. peripherals

   • input peripherals
   • output peripherals
   • input/output peripherals

6. operating systems

   • an operating system is th software that acts as an interface between the machine and people. It contains programs that control the hardware and allows the user's applications to be launched