Write the main difference between microcontroller and microprocessor. Why do smart home appliances have a microcontroller instead of microprocessor embedded in them?
The main difference between a microcontroller and a microprocessor is that a microcontroller has a CPU, a fixed amount of RAM, ROM and other peripherals all embedded on a single chip, whereas a microprocessor has only a CPU on the chip.
Smart home appliances have a microcontroller instead of a microprocessor embedded in them because microcontrollers are designed for specific tasks only. Due to this specific design, their size as well as cost is reduced. Because of their very small size, they can be easily embedded in another device or system to perform a specific functionality, making them ideal for smart home appliances.
Explanation
The textbook clearly distinguishes between microcontrollers and microprocessors in sections 1.5.2 and 1.5. The microcontroller integrates CPU, RAM, ROM and peripherals on a single chip, while microprocessor only contains the CPU. For smart home appliances, microcontrollers are preferred because they are task-specific, compact, and cost-effective - all essential qualities for embedded systems in household devices like washing machines and microwaves.
Solution Steps
Step 1: Identify the structural difference - microcontroller has CPU, RAM, ROM and peripherals on one chip; microprocessor has only CPU on chip.
Step 2: Explain the advantages of microcontrollers for smart appliances - designed for specific tasks, reduced size and cost, suitable for embedding in devices.