Learn: Embedded Systems

Welcome!Building on what you've already learned, let's explore embedded systems. You've studied the CPU, registers, and how performance is affected by clock speed, cores, and cache size. Now we'll look at how computers exist inside other devices!

What are Embedded Systems?Embedded systems are computers designed to perform specific tasks within a larger device. They are built into machines like washing machines, cars, and microwaves to control functions. Unlike general-purpose computers, embedded systems only need to focus on one or a few tasks.

Characteristics of Embedded SystemsEmbedded systems are designed to be compact, efficient, and reliable. They use specific hardware and software tailored to the device's purpose. For example, a car's embedded system might control the engine or monitor fuel usage.

Examples of Embedded SystemsEmbedded systems are found everywhere. In a washing machine, an embedded system controls the water temperature and spin cycle. In a car, it may monitor the engine or control the brakes. These systems are small but powerful, and they make devices smarter.

Why Use Embedded Systems?Embedded systems are used because they are efficient, reliable, and cost-effective. Unlike general-purpose computers, they are customised for the device they control, which saves resources and space. For example, a digital watch uses an embedded system to keep time and run its display.

Features of Embedded SystemsEmbedded systems are compact, use limited power, and are usually built with a specific function in mind. They often use microcontrollers, which combine CPU, memory, and input/output on a single chip. This makes them ideal for portable or small devices.

Review Time!Great work! You've learned about embedded systems and their characteristics, uses, and features. Let's test your understanding with a few questions.