The table compares embedded systems with... | Information and Communication Technology 0417 | Paper 1 Mock 01 | Theory

Question 1 Report

The table compares embedded systems with general-purpose computers.

Feature	Embedded system	General-purpose computer
Purpose	Single specific task	Many different tasks
Software	Fixed program	Multiple applications
User interface	Limited or none	Full GUI with keyboard and mouse

(a) Using the table, explain the difference between an embedded system and a general-purpose computer. [2]

(b) Give two examples of embedded systems and for each, state the task the embedded system performs. [4]

Answer

Answer Details

(a) The table highlights the key difference between the two types of system:

An embedded system is a microprocessor-controlled system designed to perform a single specific function within a larger device. It runs a fixed program and typically has a limited or no user interface. [1]
A general-purpose computer can be programmed to perform many different tasks and run various software applications. It provides a full graphical user interface with keyboard and mouse for user interaction. [1]

(b) Two examples of embedded systems and the task each performs:

An embedded system in a digital camera controls the autofocus mechanism, adjusts exposure settings based on light readings and handles image processing to produce the final photograph. [2]
An embedded system in an anti-lock braking system (ABS) monitors wheel speed sensors and automatically controls brake pressure to prevent the wheels from locking during hard braking, allowing the driver to maintain steering control. [2]

The table compares embedded systems with general-purpose computers. Feature Embedded system General-purpose computer Purpose Single specific task Many diffe...