| 摘要 |
<p>A keyboard having a polarity of electrical s?itching devices which may be of the capacitive or diaphram type are provided for an array of key positions. An overlay carrying a complementary array of key indicia formed photography provides an indicu? associated with each key position. The method of manufacturing the keyboards consists of fabricating a polarity of electrical switching devices to ??ovide the array of key positions, photographically fabricating the overlay carrying the complenentary array of key indidia and placing the overlay adjacent to the key positions to provide the indicium associated with each key position.</p> |
