在操作電腦的時候，滑鼠是一種最主要與最簡易的輸入裝置。除了它的外觀與造形之外，使用者握持滑鼠時與按壓按鍵時的感覺，會直接地、持續地影響著使用者對它的評價。本研究探討使用者對於滑鼠按鍵觸覺喜好的影響因素，由於按鍵的荷重與位移距離可以利用儀器量測得出數值，籍由不同設定的樣品可以協助我們找出使用者喜歡的滑鼠設定值。本研究目的有三項：(1)探討使用者較喜好的滑鼠按鍵行程與荷重之設定值。(2)藉由滑鼠按鍵荷重與行程兩者互相搭配情形，探討兩者之間的對比、比例或交互作用關係。(3)實驗過程中所收集到的受測者個人特質，可從中比對其差異情形，評估這些群體的差異影響程度。
在研究中共使用34件滑鼠樣品，在左鍵設定裡包涵45g ~ 105g荷重值與0.2mm ~ 1.2mm行程值。從各項實驗結果可得知：(1) 在行程0.2mm ~ 0.8mm區域裡，最受喜歡的荷重值大致在60g上下；而在大於0.8mm行程區域裡，只有最輕的荷重值45g可被受測者接受。最理想的滑鼠按鍵設定值搭配為荷重值為60±5g，行程值介於0.2mm ~ 0.8mm之間。 (2) 受測者對滑鼠按鍵行程與荷重設定值有簡單規律存在，即荷重值愈高，喜好度愈低，而按鍵荷重值愈大，喜歡的行程值範圍就愈小；對於受測者喜歡或討厭的按鍵荷重臨界值在75g ~ 90g之間；在0.8mm以下行程較短的範圍裡，按鍵荷重對受測者喜好影響程度比行程稍大一些。就所有樣品喜好度分佈情形而言，大部份受測者偏好較短行程、較輕荷重的滑鼠按鍵設定值。另外不同組別的受測者與測試樣品結果均具有相同的喜好趨勢，表示大部份使用者對滑鼠按鍵操作情形具有相似的認知與反應模式。 (3) 受測者群體中各種個人特質，如性別、年齡、使用時數或電腦遊戲愛好，分析結果顯示，單一特質在操作滑鼠時不具有強烈的影響力。 (4) 受測者可以明確分辦按鍵荷重的增量約在10g，行程增量則介於0.3mm ~ 0.4mm之間。

A mouse is one of the important and easy input devices for operating a computer. Besides its cosmetic and shape, users' evaluation will be affected directly and continuously by gripping it and pressing its keys.
This study is to investigate the effect upon users' tactile preference for mouse key. Because the stroke and load of mouse key can be measured by means of digital values, they can help us find the users' favorite setting of different conditions. There are three purposes of this study: (1) To investigate users' favorite value of stroke and load of a mouse key. (2) To find out the relationship between their contrast, proportion and interaction by comparing stroke and load with each other. (3) By personal characteristics of all participants invited in this study, we can compare their differences to evaluate their influence of these individual groups.
A total of 34 mouse samples were used in this study, and their settings of left key contain the load range from 45g to 105g and the stroke range from 0.2mm to 1.2mm. The experimental results show that: (1) In the stroke range between 0.2mm and 0.8mm, participants' favorite load value is 60g. However, when the stroke range is over 0.8mm, participants accept only the lightest load value of 45g. Therefore, ideal setting of mouse key is the load of 60g ± 5g and the stroke from 0.2mm to 0.8mm. (2) There are some rules of participants for the load and stroke of a mouse key. The heavier the load of mouse key, the more the tester does not like. Its critical load value is between 70g and 90g. In the short stroke range less than 0.8mm, the load value affects participants more than the stroke value. Most participants prefer the setting value of short stroke and light load based on observing the score distribution from every mouse sample. Besides, the experimental results show that the participants from different groups have a similar preference patterns from the interaction diagram. Therefore, it shows that most users have similar cognition and response when using a mouse. (3) The analysis of personal characteristics of participants (i.e., gender, age, hobby and usage time) shows that their characteristics may not have strong influence on their operation of a mouse. (4) Participants can clearly distinguish the key load increments of about 10g and the key stroke increments between 0.3mm and 0.4mm.

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