Back in the 1970s, I wanted to be able to type while walking around, or compose music while jog- ging, so I came up with various devices that were like a keyboard but without the board.
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Homebrew — My Multiambic Keyer
Back in the 1970s, I wanted to be able to type while walking around, or compose music while jog- ging, so I came up with various devices that were like a keyboard but without the board.
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