Which of the following is NOT an example of an embedded system?

An embedded system is a specialized computer system designed to perform dedicated functions within a larger mechanical or electrical system. Unlike general-purpose computers, embedded systems are tailored for specific tasks and are not typically intended for multiple applications.

In this case, a desktop computer stands out as it is a general-purpose computing device. It is designed to run a variety of software applications, from web browsers to complex programming environments, making it versatile and suitable for numerous tasks. This flexibility contrasts with embedded systems, which are optimized for particular applications such as controlling the functions of a washing machine, managing the engine operations of a car, or regulating a microwave oven's heating cycle. Each of these examples focuses on specific tasks rather than multifunctional capabilities.

Therefore, the desktop computer is distinctly not an embedded system, as it serves a broader range of uses and is not constrained to a single dedicated function.