What an Automated System Is — Automated Systems | IGCSE Computer Science

Exam Frequency Analysis

Past paper frequency (2018 to 2024)

This topic accounts for approximately 3% of your exam marks.

stable

Rare

Stable3%

Sensor to microprocessor to actuator control loop questions. Usually 3 to 4 marks.

An automated system is a computer-controlled system that collects data from its environment and takes action on its own based on that data, without needing constant human input.

The defining feature of an automated system is that it decides for itself what to do. The decisions are made by a microprocessor following pre-programmed rules; the system runs in a continuous loop, reading sensors and driving outputs.

Examples you will recognise:

A central-heating thermostat that switches the boiler on and off to keep a room at a target temperature.
An automatic greenhouse that opens its vents when it gets too hot or starts irrigation when the soil dries out.
A traffic-light system that adjusts its timing based on detected vehicle queues.
Self-driving features in modern cars (adaptive cruise control, automatic emergency braking, lane keeping).
Anti-lock braking systems (ABS) in cars.
Robotic vacuum cleaners that map a room and clean it without human steering.

Automated systems are everywhere; this topic is about what is inside them.