| 摘要 |
There is disclosed a keyboard transmitter having symbol keys, shift and shift-lock keys, a symbol key interlock for preventing more than one symbol key from being depressed at a time, a keyboard lock for locking up the keyboard, a weatherseal forming a seal between each key and the keyboard housing, a plurality of printed circuit boards extending transversely with respect to the symbol keys, a plurality of switches mounted by each printed circuit board, each symbol key being aligned with one of said switches, and code means mounted by each printed circuit board adjacent its respective switch.
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