Font size
WorksheetsWJEC GCSE ICT Unit 3 - Data Logging and Control
Total questions: 13
Worksheet time: 7mins
The input device in a control system is called a ...
Sensor
Sizer
Starter
Printer
What sensor could be used to control a security light that turns on when it gets dark?
Light
Heat
Humidity
Proximity
What sensor could be used to control a security light that turns on when someone walks past?
Motion
Heat
Humidity
Proximity
A sensor used to measure moisture in the air is called a ...
Humidity
Heat
Infared
Light
Collecting readings at specific intervals is called ...
Automation
Data logging
Blogging
Which of these is not an output device used in control systems?
LED
Motor
Motion sensor
Speaker
Advantages of computer control are
The computer does not require paying
Robots cannot think for themselves
They can work in dangerous conditions
They are expensive
Advantages of data logging are
Data collection is automatic
Recordings can be taken over a long period without someone forgetting
If there is a fault it will take a long time to be noticed
It is smarter than humans
Which is the missing step in this control sequence for an automatic door?
Start
Person approaches door
?
Actuator opens door
Actuator closes door
Person presses button
Sensor detects person
Receptionist pushes button
A computer model of a real system, such as an aeroplane or a car is known a what?
(a)
Which of these are ADVANTAGES of computer control systems. (Tick all the correct answers to get the points)
Changes are monitored more quickly than a human could manage
Computers don't get tired or need holidays
If there is a mistake in the program it will be repeated until it is spotted
Every job is done with the same precision
Computer only do what they are programmed to do, so they can't adapt to changes easily.
Which of these are DISADVANTAGES of computer control systems. (Tick all the correct answers to get the points)
Changes are monitored more quickly than a human could manage
Computers don't get tired or need holidays
If there is a mistake in the program it will be repeated until it is spotted
Every job is done with the same precision
Computer only do what they are programmed to do, so they can't adapt to changes easily.
