# 06 - Statement to Diagram Practice

1. What is the boolean expression for this NOT gate?

Y = NOT A

A = Y

NOT Y = Y

Y = A

2. What is the boolean expression for this AND gate?

A AND B

Y = A AND B

Y = A OR B

Y AND A

3. What is the boolean expression for this OR gate?

A OR B = A

NOT Y = AB

Y = A OR B

Y = A AND B

4. Write the boolean expression for this circuit - -

O = (A OR B) NOT

O = NOT (A AND B)

None of the above

O = A AND B NOT

5. Write the boolean expression for this circuit - - -

O = A NOT B NOT B

O = NOT A AND NOT B

O = NOT (A OR B)

None of the above

6. Write the boolean expression for this circuit -

O = (NOT A) AND B

None of the above

O = NOT A OR NOT AND B

O = NOT B AND NOT A

It has one output S

It has two outputs S and C

It has for inputs, A, B, S and C

It has three inputs A, B, C

8. Assume that the top logic gate is a XOR gate, what is the boolean expression for S?

S = A XOR B

S = C XOR A

S = B XOR B

S = A XOR C

9. What would the boolean expression be for the output C?

C = A AND B

C = A AND C

C = S AND B

A = A AND B

10. Write the boolean expression for this particular logic diagram (note that you can use brackets to denote an 'AND')
`Don't forget that a + is an OR gate and a . (or brackets) is an AND gate. `

A(BD) + C

C(D) + A

(AB + C)D

A + C (D)