这个范例说明如何使用8051的Port 1连接到LCD显示器，PORT 3的P3.3,P3.4和P3.5分别连接到LCD显示器的控制线程序执行时让LCD显示器显示出数字时钟PORT 2连接到4ⅹ4的小键盘,可以修改时间4ⅹ4小键盘的按钮B ,可以修改间*/-This example shows how to use the 8051 Port 1 to connect to the LCD display, PORT 3 of the P3.3, P3.4 and P3.5 are connected to the control line of LCD monitors program execution to let the LCD display shows digital clock connected to the PORT 2 4 ⅹ 4 a small keyboard, you can modify the time 4 ⅹ 4 keypad buttons B, can modify the rooms* /