隨著科技進步之神速,電腦之使用使生活更加便捷,也因為電腦的不可或缺,其周邊輸入裝置儼然扮演著樞紐關鍵地位裝備。在靜態環境中屬滑鼠之績效為最佳,然而在動態環境中,最重要的當屬操作之穩定性,此方面滑鼠卻不如軌跡球。不過由於艦艇人員操作軌跡球進行作業之不易抓握,進而導致肌肉疲勞與痠痛。因此,改善此問題為本研究欲探討之目的。 本研究希望藉由可抓握之功能來增進操作之穩定性。因此,以「握把式軌跡球」作為評估ㄧ般「桌面型軌跡球」之輸入裝置,並以(1)定位作業;(2)穩定性作業;(3)靈敏度作業及(4)主觀評量表為評量之媒介,深入探討握把與扶手前傾0度、15度及30度與左傾0度、15度及30度之最佳角度組合。 研究結果顯示,當握把式軌跡球呈現「前傾30度-側傾30度」之組合時,其操作之績效是最高的,其次為「前傾15度-側傾15度」之組合,而當握把式軌跡球呈現「前傾0度-側傾0度」之組合時,其操作之績效是最差的,「桌面型軌跡球」則為次之,不過在靈敏度作業中,「桌面型軌跡球」之績效卻是最高的。在主觀評量部分,「前傾0度-側傾0度」之組合與「桌面型軌跡球」易造成右前臂、右手腕及右手掌之疲勞,且不易抓握及工作績效不佳之現象。整體而言,當前傾角度為30度時,其操作績效比前傾15度與0度來的佳。
Because technological progress is very fast, the use of the computer has made our more convenient. The input devices for a computer play an important role. The best performance belongs to the mouse in the static environment. The mouse is not as good as the trackball in the dynamic environment, mouse is difficult to operate in a naval vessel which is subject to motion and vibration. Developing a pointing device which can be grasped to promote the stability in operation is purpose of this research. The device is a trackball positioned on a vertical handle. The hand grasps the handle and moves the trackball with the thumb. The study investigates the forearm posture in using the device. The results show that the device can be used with a particular hand and forearm posture to produce best operating performance.