|Resonator (3 pin)||Lamp||Motor|
|Push to make switch||Push to break switch||Single pole single throw switch (SPST)|
|Single pole single throw switch (normally closed||Single pole double throw switch (SPDT)||Double pole double throw switch (DPDT)|
|Dry Reed Switch||Opto-switch||Relay (shown with double throw contacts)|
|AND gate||OR gate||NOT gate (invertor)|
|NAND gate||NOR gate|
|Battery (Primary cell)||Batteries||Power supply|
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