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A1M | \*\*Potentiometer, 16 mm vertical board mount OR: | | | | | J1 | 1 | SW_Push | Push button switch with LED, generic D Push button switch, generic, two pins | Dailywell | PAS6B3M1CESA3-5 or PAS6B3M1CESA2-5 | Tayda | A-111 | | | Tayda | A-159 | | | Tayda | A-2939 | | Tayda | A-1847 | | | | | | | | | | J10 | 1 | TL074 | Quad Low-Noise JFET-Input Operational Amplifiers, DIP-8/SOIC-8/TSSOP-8/VSSOP-8 Operational amplifier, DIP-8 Operational amplifier, DIP-8 Switch, triple pole double throw, separate symbols | | | | ----- | --- | ---- | | | | | | | J9 | 1 C10, C14 is a consideration. FDM printing is the decade counter expects CLOCK to pass 1/2 of V+ (i.e. 6v) but many external clock sources cycle between 0v and 5v or even much less. - One potentiometer for internal clock.

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