Computing Topic 2

Computing Topic 2

1. Input and Output

   • Input
     • Where data is given to the computer
     • Mouse
     • Key board
     • Microphone
   • Output
     • Where data is given out for the user to see
     • Monitor/screen
     • Speaker
     • Printer

2. ROM and RAM

   • RAM
     • Doesn't save when computer turned of
     • volatile memory
     • Stores data so the program can run
     • Dynamic RAM
     • Static RAM
   • ROM
     • Stores data for the computer to 'boot up'
     • Non-volatile memory
     • PROM
     • EEPROM
   • Memory
     • computer stores or remembers data
     • closer a memory type is to the CPU, the quicker the CPU can access the instructions and execute them

3. Virtual memory

   • When RAM is full
   • Latency
     • Increased with virtual memory

4. The CPU

   • Fetch-decode-execute
     • Fetch
       • Fetches Data
     • Decode
       • Decodes the data in to binary
     • Execute the instructions given

5. The mother bored

   • The main bored
   • It connects the CPU to the memory
   • buses

6. Binary Logic

   • Not Gate
   • And Gate
   • OR gate