program selector switch

例句：

1. 1.The program selector switch is located on the side of the computer.
   程序选择器开关位于计算机的侧面。
2. 2. The program selector switch allows you to choose between different programs.
   程序选择器开关可以让你选择不同的程序。
3. 3.The program selector switch is used to control the speed of the computer's processor.
   程序选择器开关用于控制计算机处理器的速度。