Mechanical keyboards and membrane keyboards differ significantly in terms of feel, lifespan, cost, and use cases. Mechanical keyboards use individual switches, offering a variety of tactile experiences—such as the crisp feel of blue switches and the light touch of red switches. They have a lifespan of over 20 million keystrokes, support full anti-ghosting, and are ideal for gaming and programming. However, they are relatively expensive, with entry-level models costing several hundred yuan, and they tend to be heavy and noisy. Membrane keyboards, on the other hand, use rubber domes for actuation, providing a soft and consistent feel. They have a lifespan of approximately 10 million keystrokes and cost as little as a dozen yuan. They offer the advantages of being quiet, portable, and resistant to water and dust, making them suitable for office use, mobile scenarios, and users on a tight budget. Both types have their own merits, so the choice should be based on your specific needs and budget.