CMPE12
Quiz 2
July 8, 2010
Name (LAST, First): ________________________________________
E-mail: [email protected]
Directions: No books, notes, or calculator. Simple computations are expected to be carried out by hand.
Show your work. No credit will be given for a correct answer if work is not shown.
1. Which of the following is the correct definition of CMOS? Circle the correct answer.
a) Convalescent metallic oxide semiconductor
b) Complementary metal oxide semiconductor
c) Complimentary meal for one sitting
d) Cosmic metal online systems
2. In the diagram below, please identify…
a) A p-type transistor (pMOS) – show with an arrow and label
b) An n-type transistor (nMOS) – show with an arrow and label
c) Vdd (logic 1) – label this in the diagram
d) Gnd (logic 0) – label this in the diagram
e) The output Y – label this in the diagram
f) The logic function of the output Y:
Y =
3. In the diagram below (which is the same diagram from the question above), show
what happens for inputs A=0, B=0, C=1. That is, show which gates are open, which
gates are closed, and show the current flow to the output.
4. A memory requires 8 bits to address each line. Each line in memory is built from 16
flip-flops.
a) What is the address space of the memory?
b) What is the addressability of the memory?
5. For the logic diagram shown below, complete the timing diagram for Q. Assume the
initial values of each signal are as shown (i.e., Ck has always been ticking, WE has
always been 1, D has always been 1).