| 摘要 |
An apparatus for producing signals that are representative of those produced by actuating a keypad on computer keyboard includes a momentary switch for energizing a USB microcontroller to produce a signal that complies with a USB protocol. The produced signals are inputted into a USB port on a CPU to be recognized as a single keystroke. An eight-output DIP switch connects to the USB microcontroller for varying the inputs to the microcontroller to change the signal produced by the microcontroller. The apparatus functions as a simple human, mechanical, or optical interface for generating signals representative of keystroke that are relayed to the CPU via a USB interface.
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