设计内容是利用BIOS系统功能调用，进行简单的动画设计，并根据以下提示信息进行选择：1--小鸟从屏幕飞过；2　汽车按水平方向从屏幕上“开”过去；3　退出。-Design is the use of the system BIOS function calls, simple animation design, and in accordance with the following message to choose 1- birds flying　the screen　2- car by the horizontal direction　the screen　on　the past　3 - Quit.