In this module you have learned about computer based, control systems. These systems are any devices, with or without a sensor, that are programmed to perform a specific task. For example, a kettle can be thought to be a control system. You switch on a kettle and the element heats water. This continues until a sensor detects that the water temperature has reached 100°. 1. Why is it useful to use electronic or computer based control systems? (1) 2. What is an advantage of having a sensor to detect waiting cars at traffic lights? (1) 3. Describe an example of a control system found in your house that uses a sensor. (1) 4. Why is it useful to be able to change the instructions in a control system? (1) 5. Which type of sensor is used in a central heating system? (1) 6. Describe a system that does not use a sensor but that could be improved by using a sensor. (1) 7. An inventor invents a Lamp that uses a light sensor. This type of sensor could be used in the lamp so that it senses when it needs to be used as it gets darker and comes on automatically. Name a nother 2 types of sensor and state what kind of system they would be used in? (4) Total (10) |
