Explore key reading techniques for the Amstrad CPC, ZX Spectrum, and Sam Coupe in this 24-minute video lesson. Learn how to read input without relying on firmware, focusing on these classic computer systems. Dive into hardware specifics, understand key clash issues, and examine example code for each platform. Discover how to implement return commands and perform data conversion. The lesson provides a detailed look at key reading on the Amstrad CPC, with insights applicable to other systems. Gain practical knowledge to enhance your programming skills for these vintage computers. Access accompanying text lessons and source code from the provided website link for a comprehensive learning experience.