| 摘要 |
An infrared remote-control laser pointer capable of emitting a pointing light spot is provided with an infrared transmitter to work with a receiver electrically connected to a computer. By selectively pushing one of two push-button switches externally provided on the laser pointer, an encoded infrared signal is emitted and transmitted from the pointer to the receiver. When the transmitted infrared signal is decoded and determined as a correct signal, a signal emulating a mouse-controlled page up or down instruction is input to the computer via a USB interface to perform the page up or down function on the computer. Thus, a user may independently, quickly, and correctly control the computer to page up or down while using the laser pointer to report in a briefing or teach in a classroom. |
