Standard switching diode, DO-35Push button switch, generic, two pins D Push button switch, generic, separate symbols, four pins D Push button switch, generic, symbol, four pins D Push button switch | | R5, R29 | 2 | 1N5817 | Schottky Barrier Rectifier Diode, DO-41Operational amplifier, DIP-8Switch, triple pole double throw D Switch, single pole triple throw, 3 position switch, SP3T K switch normally-open.