The transmitter device has, according to IBM, a "large viewing screen with touch-point capabilities, an embedded keypad platform and a Linux-based operating system."
IBM称该发射器包括一个大型触摸屏，一个嵌入式键盘平台，以及一个Linux操作系统。
Prompts that expect a response can either provide a list of valid words that are accepted and recognized by the voice recognition system, or you can ask for input through the telephone keypad.
这个提示需要响应提供有效单词的列表，语音识别系统可以接收并识别这些单词；也可以通过电话键盘进行输入。
In this paper, microcontroller, stepper motor driver chips, character LCD and keypad array, build a set of stepper motor controller and driver as one of the stepping motor control system.
本文应用单片机、步进电机驱动芯片、字符型LCD和键盘阵列，构建了集步进电机控制器和驱动器为一体的步进电机控制系统。
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