In [1]:

    

def truth_table(gate):
    print("*{}*".format(gate.__name__))
    print("|x1|x2|y|")
    print("|0 |0 |{}|".format(gate(0, 0)))
    print("|0 |1 |{}|".format(gate(0, 1)))
    print("|1 |0 |{}|".format(gate(1, 0)))
    print("|1 |1 |{}|".format(gate(1, 1)))


    

In [2]:

    

def and_gate(x1, x2):
    w1, w2, theta, = 0.5, 0.5, 0.75
    if theta < x1 * w1 + x2 * w2:
        y = 1
    else:
        y = 0
    return y


    

In [3]:

    

truth_table(and_gate)


    

    




*and_gate*
|x1|x2|y|
|0 |0 |0|
|0 |1 |0|
|1 |0 |0|
|1 |1 |1|

In [4]:

    

def or_gate(x1, x2):
    w1, w2, theta, = 0.5, 0.5, 0.25
    if theta < x1 * w1 + x2 * w2:
        y = 1
    else:
        y = 0
    return y


    

In [5]:

    

truth_table(or_gate)


    

    




*or_gate*
|x1|x2|y|
|0 |0 |0|
|0 |1 |1|
|1 |0 |1|
|1 |1 |1|

In [6]:

    

def nand_gate(x1, x2):
    w1, w2, theta, = -0.5, -0.5, -0.75
    if theta < x1 * w1 + x2 * w2:
        y = 1
    else:
        y = 0
    return y


    

In [7]:

    

truth_table(nand_gate)


    

    




*nand_gate*
|x1|x2|y|
|0 |0 |1|
|0 |1 |1|
|1 |0 |1|
|1 |1 |0|

In [8]:

    

def xor_gate(x1, x2):
    s1 = or_gate(x1, x2)
    s2 = nand_gate(x1, x2)
    y = and_gate(s1, s2)
    return y


    

In [9]:

    

truth_table(xor_gate)


    

    




*xor_gate*
|x1|x2|y|
|0 |0 |0|
|0 |1 |1|
|1 |0 |1|
|1 |1 |0|