Systems Architecture

Systems Architecture

1. Memory

   • RAM
     • Volatile
     • Holds instructions which may be useful later on
       • If you open word, then close it, then open it again it will open faster
   • Cache
   • ROM

2. Secondary Storage

   • CD
     • Single layer CD's hold 800mbs
   • DVD
   • USB stick
     • Can hold up to 1TB
   • HDD

3. Motherboard

   • CPU
     • Central Processing unit
     • Arithmetic logic unit
       • A unit in a computer which carries out arithmetic and logical operations. Arthmetic is x + 5. Logic is is x > 100
   • Connects everything together

4. Network Card

   • LAN
   • Connects the computer to a computer network
   • Lets exchange data

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