| 摘要 |
A keyboard assembly includes a printed circuit board having conductive paths defining a plurality of switch sites. Contact terminals are connectable in electrical circuits with the conductive paths. The assembly also includes an electrically-groundable conductive panel overlying the board and having a plurality of apertures defined therein in registry with the switch site. A dielectric layer is disposed between the panel and board providing electrical isolation therebetween. A plurality of individually-replaceable EMI RFI-shielded switch modules are installed in registry with the apertures on the conductive panel, in overlying relation to the switch sites, and electrically connected to the conductive panel.
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