The 74LS11 IC package contains three independent positive logic 3-input AND GATES. Pins 14 and 7 provide power for all three logic gates.
[AND SIMULATION]       [AND TRUTH-TABLE]
	Use caution when wiring chip and be sure to check which pins are outputs and inputs! AND GATE Logic-Rules: The output for a gate is HIGH only when all three inputs are HIGH, otherwise output is LOW.