Gates: truth tables
		Unsigned						Function
		Binary						Name	Gates
	Inputs		a	0	0	1	1
			b	0	1	0	1
	Outputs	0		0	0	0	0	FALSE
		1		0	0	0	1	AND
		2		0	0	1	0	a & ~b
		3		0	0	1	1	a
		4		0	1	0	0	~a & b
		5		0	1	0	1	b
		6		0	1	1	0	XOR
		7		0	1	1	1	OR
		8		1	0	0	0	NOR
		9		1	0	0	1	XNOR
		10		1	0	1	0	~b
		11		1	0	1	1	a | ~b
		12		1	1	0	0	~a
		13		1	1	0	1	~a | b
		14		1	1	1	0	NAND
		15		1	1	1	1	TRUE