Appendix B Errata

You should always consult a textbook's master errata when available, but I wanted to bring to your attention a few key ones you might have noticed in the reading.

B-695

In "Truth Tables" should read:

For a logic block with ninputs, there are 2ⁿ entries in the truth table

B-700

The logic function for the two-input multiplexor should be

C=(A· S   )+(B·S),

to account for the negation bubble on the input to the top AND gate of Figure B.3.2

B-702

The equation at the end of the Sum of Products example should have sums between the terms:

D=( A   · B   ·C)+( A   ·B· C   )+(A· B   · C   )+(A·B·C).

In addition, the second minterm in the enumeration is printed incorrectly and should be ―A·B·―C.

Finally, the table should have C listed as an input, rather than an output.