HSC AMS 6.4

Interface which converts Digital signal to analogue signal.

• ADC
• Modem
• Printer
• DAC

Interface which converts Analogue Signal to Digital Signal.

• DAC
• Microprocessor
• ADC
• Sensor

Identify actuators from the following

• Water-level
• Temperature
• Pressure
• Motors

Part of the device is connected to a computer which opens and closes a circuit as required.

• Actuator
• DAC
• Microprocessor
• ADC

What is used to convert signals between the sensors and processor?

• interface box
• control unit
• actuator

Which of the following sensors would be used in an air conditioning system?

• temperature sensor
• sound sensor
• light sensor

What converts analogue data from the sensors into digital data?

• CDA
• DAC
• ADC

What do central heating and air conditioning control systems often make use of?

• actuators
• feedback
• magnetic sensors

Which of the following is untrue of computer control?

• computers can respond very rapidly to change
• computers can make instant decisions when something unusual happens
• control systems can run 24 hours a day, 365 days a year

Which of the following is not an advantage of Robots?

• They can be used in dangerous environments
• They can replace jobs 
• They can assist humans with disabilities
• They don't get tired or require a break