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( 2 3 4 ) 30.Which timing diagram represents ?
0
1
2
3
4
a. 0 1 2 3 4 d.
b.
e.
c. Page 18 of 25 Consider the following truth table for the following six problems. 0 0 0 0 0 0 1 0 0 1 0 1 0 1 1 1 1 0 0 0 1 0 1 1 1 1 0 0 1 1 1 1 31.What is the canonical SOP for ?
̅̅
̅
̅̅
a. ̅ ̅ ̅
̅
̅
̅
b. ̅ ̅
̅
c. ̅ ̅ ̅
̅
d. ̅ ̅
̅
e. ̅ ̅ 32.Finish the NANDNAND implementation of .
a.
̅
b.
̅
c.
̅
̅
d.
e. None of the above. Page 19 of 25 33.Ms. Information, who has never taken ECE110 but knows a little about
logic, believes that
⨁ . Which minterm replaces the one of the
correct minterms of the correct expression for due to her mistake?
a. ̅ ̅ ̅
b. ̅ ̅
c. ̅ ̅
̅
d.
e. None of the above. 0 0 0 0 0 0 1 0 0 1 0 1 0 1 1 1 1 0 0 0 1 0 1 1 1 1 0 0 1 1 1 1 For the next three problems, imagine you have an implementation of the
same , represented by a box: Page 20 of 25 The following circuit uses this device to drive a hexadecimal display: t
0
1
2
3
4
5 S2
0
0
0 S1
0
0
1 S0
0
1
0 Q
0
0
1 R3
0
0
0 R2
0
0
0 R1
0
0
0 R0
0
0
0 34.What is the content of the register at clock cycle
?
a. 0000
b. 0100
c. 0110
d. 0111
e. 1111
35.Which hex digit will never be displayed no matter how many clock c...
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 Fall '08
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