Abstract
To learn the computer engineering, students used a single board computer system in the seventies. It was possible to learn how to control devices by the system. Recently, single board computers are being replaced with a CAI(Computer Assisted Instruction) system such as a PC-based assembly language programming laboratory. However, conventional CAI systems originally have not been implemented for understanding hardware technology. For the reason, we have developed the x80 that is a virtual single board computer on the X Window System. The x80 provides students with the learning environment similar to the real single board computer. The paper describes an outline of the learning style on the real and virtual single board computer.