这是本关于保护模式下变成的电子书，设计很多CUP设计原理。是理解操作系统的必看书-This is a protected mode on the e-books into the design a lot of design principles CUP. Is to understand the operating system will read

根据键盘输入的数字0,1,2,3分别显示信息“8086/8088”“80386”“80486”“Pentium”-According to figures 0,1,2,3 respectively keyboard input display information " 8086/8088" " 80386" " 80486" " Pentium"