Computer Control

Computer Control

1. Advantages

   • Labour costs reducded
   • Doesnt get tired
   • Reliable and accurate

2. Disadvantages

   • Way cost alot of money to develop
   • If there is a power cut the system wont work
   • If the program malfunctions, it will no longer work

3. Devices

   • Input Sensors
     • Heat
     • Light
     • Infra-Red
     • pH

4. ADC (Analogue Digital Converter)

   • Sensors take analogue measurments
   • Digital data only cosists of 0's and 1's

5. Processes

   • Computers can only follow rules that it has programmed in the control system

6. Output

   • Once the proccess has taken place, the computer will send the correct signal to the output device.
   • Output devices
     • Heater
     • Fan
     • Open a window

7. Control systems

   • Feedback
     • Picture exposure on a digital camera
     • Central heating system with a set temperature
     • Fridge with a set temperature
     • Oven with a set temperature
   • Open Loop
     • Switching on a light
     • Toaster
     • Remote control
   • Examples
     • Washing machines
     • Microwaves
     • Dishwashers
     • Central heating system

8. Actuator

   • Allows a computer to control movement or an action