| J1 | KB1 | Generic connector, single row, 01x05, script generated (kicad-library-utils/schlib/autogen/connector/) |
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| J2 | ZX81 Joypad | 9-pin D-SUB connector, pins (male) |
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| J3 | KB2 | Generic connector, single row, 01x08, script generated (kicad-library-utils/schlib/autogen/connector/) |
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| SW1 | 1 | Push button switch, normally open, two pins, 45° tilted |
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| SW2 | Q | Push button switch, normally open, two pins, 45° tilted |
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| SW3 | A | Push button switch, normally open, two pins, 45° tilted |
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| SW4 | SHIFT | Push button switch, normally open, two pins, 45° tilted |
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| SW5 | 2 | Push button switch, normally open, two pins, 45° tilted |
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| SW6 | W | Push button switch, normally open, two pins, 45° tilted |
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| SW7 | S | Push button switch, normally open, two pins, 45° tilted |
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| SW8 | Z | Push button switch, normally open, two pins, 45° tilted |
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| SW9 | 3 | Push button switch, normally open, two pins, 45° tilted |
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| SW10 | E | Push button switch, normally open, two pins, 45° tilted |
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| SW11 | D | Push button switch, normally open, two pins, 45° tilted |
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| SW12 | X | Push button switch, normally open, two pins, 45° tilted |
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| SW13 | 4 | Push button switch, normally open, two pins, 45° tilted |
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| SW14 | R | Push button switch, normally open, two pins, 45° tilted |
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| SW15 | F | Push button switch, normally open, two pins, 45° tilted |
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| SW16 | C | Push button switch, normally open, two pins, 45° tilted |
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| SW17 | 5 | Push button switch, normally open, two pins, 45° tilted |
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| SW18 | T | Push button switch, normally open, two pins, 45° tilted |
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| SW19 | G | Push button switch, normally open, two pins, 45° tilted |
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| SW20 | V | Push button switch, normally open, two pins, 45° tilted |
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| SW21 | 6 | Push button switch, normally open, two pins, 45° tilted |
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| SW22 | Y | Push button switch, normally open, two pins, 45° tilted |
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| SW23 | H |
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