键盘任务与显示任务联合实验程序，：在实验中，利用五条短消息来完成键盘任务和显示任务之间的通信。程序中用两个按键分别控制数字窗口是否需要显示出来，用两个按键对数字窗口的水平位置进行调整，用10个按键分别输入10个数字，这些数字显示在窗口中。- Keyboard and display tasks experimental procedures, in experiments using five short message communication between the keyboard to complete tasks and display tasks. Two buttons control the program using a digital window whether displayed, with two buttons on the horizontal position of the window to adjust figures with 10 buttons each input 10 digits that appear in the window.