5 Jamelia has a greenhouse that she uses to grow fruit and vegetables. She needs to make sure the temperature in the greenhouse stays between 25 °C and 30 °C (inclusive). A system that has a temperature sensor and a microprocessor is used to maintain the temperature in the greenhouse. The system will: • open a window and turn a heater off if it gets too hot • close a window and turn a heater on if it gets too cold. Describe how the system uses the temperature sensor and the microprocessor to maintain the temperature in the greenhouse. … … … … … … … … … … … … … … [8]

5 Eight from: − Sensor send data/readings/signal to microprocessor − Data is converted from analogue to digital (using ADC) − Microprocessor compares/checks data to stored values/range of values … − … If data is greater than 30 / above the range microprocessor sends signal to open window and to turn heater off − … If data is below 25 the microprocessor sends signal to turn on heater and to close window − … If data is between 25 and 30 / within the range no action taken − Actuator is used to operate heater/window − Whole process is continuous 8

5 A security light system is used by a factory. The light only comes on when it is dark and when movement is detected. The light will stay on for 1 minute before switching off. Sensors and a microprocessor are used to control the security light system. (a) Identify two sensors that would be used in the security light system. Sensor 1 … Sensor 2 … [2] (b) Describe how the sensors and the microprocessor control the security light system. … … … … … … … … … … … … … … … [8]

5(a) − Light sensor − Motion sensor // infra-red sensor 2 5(b) Eight from: − Sensors send data to microprocessor − Data is converted to digital (using ADC) − Microprocessor compares data to stored value(s) … − … if one value or neither values are within range/out of range/match no action is taken − … If both values are out of range/in range/match microprocessor sends signal to switch light on … − … 1-minute timer is started − Actuator used to switch on/off light − When timer reaches 1 minute, microprocessor sends signal to switch light off − Whole process is continuous 8

8 An electronic game has three square mats that are coloured red, green and blue. The player will see a colour displayed on a screen and has 1 second to hit the mat that matches the colour. If the player hits the correct mat, within 1 second, a counter is incremented. When a player hits an incorrect mat, the game ends. The game uses sensors and a microprocessor to determine if the player hits the correct mat within 1 second. Explain how the game uses sensors and a microprocessor to count the number of times a player hits a correct mat within 1 second. … … … … … … … … … … … … … … [7]

8 Seven from: − Timer is started − Pressure sensor (within each mat) − Sensor sends data to microprocessor − Analogue data is converted to digital (using ADC) − Microprocessor compares data to stored value(s) − If data matches / in/out range microprocessor stops timer − If data matches / in/out range microprocessor checks if data has come from correct colour mat sensor − If data matches / in/out range microprocessor checks to see if timer is stopped at less than 1 second − If data matches / in/out range microprocessor increments counter if timer is less than 1 second and colour/mat is correct − If correct colour/mat is hit, timer is reset and the whole process is repeated − If data has not come from the correct colour mat sensor the game ends 7

11 A theme park has a game where a player tries to run from the start to the finish without getting wet. The system for the game uses sensors and a microprocessor to spray water at a player as they run past each sensor. Describe how the sensors and the microprocessor are used in this system. … … … … … … … … … … … … [6]

11 Six from: − Suitable sensor used e.g. motion sensor/pressure sensor − (Analogue) data is converted to digital (using ADC) − Sensor sends data to microprocessor − Data compared to stored data … − … if value outside range/within range water is sprayed − … signal sent to actuator to spray water − … if value within range/outside range no action taken − Continuous loop 6

7 (a) An office has an automated lighting system. When movement is detected in the office the lights are switched on. If movement is not detected for a period of 2 minutes the lights are switched off. The system uses a sensor and a microprocessor. Describe how the automated lighting system uses a sensor and a microprocessor. … … … … … … … … … … … … [6] (b) A microprocessor uses ROM. Explain what is meant by ROM. … … … … … … [3]

7(a) Six from: − Motion sensor is used − Sensor sends data/signal to microprocessor − Data/Signal is converted from analogue data to digital data (using ADC) − Value to compared to stored value(s) // − If value is outside range/matches « − « microprocessor sends signal to switch lights on − « actuator used to switch light on/off − « timer is set for 2 minutes − Every time movement is detected the timer is reset − When timer reaches 0/120/times out microprocessor sends signal to switch lights off − Process is continuous 6 7(b) Three from: − Read only memory − Non-volatile memory // Contents of memory are retained when power is turned off//permanent storage − Primary storage // directly accessed by the CPU − Holds firmware/boot-up instructions/start-up instructions/BIOS − Cannot be written to 3

Cambridge O Level Computer Science · 2210

O-Level Computer Science (2210) Automated and emerging technologies past paper questions

Revise O-Level Computer Science (2210) — Automated and emerging technologies with real Cambridge past-paper questions grouped by topic, each shown with its marking scheme. Working one topic at a time targets exactly the skill each question tests.

12 free questions from 2016–2021, each with its marking scheme. Open the full topical bank to filter by subtopic, paper, and year.

Automated and emerging technologies in O-Level Computer Science 2210 exams, 2020–2025

Across 2020–2025, Automated and emerging technologies accounted for 21 questions worth 200 marks in Cambridge O Level Computer Science (2210) papers.