SI100 EE quiz 5
姓名
____________
学号
____________
Suppose a combinational logic expressed as
, under what kind of following inputs will racing condition exists?
B=0, C=0
B=0, C=1
B=1, C=0
B=1, C=1
Bit storage
How many D flip-flops are required to store one byte of data if D flip-flops are used to build the register?
1
And how many D latches are required?
2
A.8
B.16
C.4
D.2
D latch -- D flip-flop
The difference between building registers with latches and flip-flops is the D latch pass through D to Q at
1
,
and D flip-flop pass through D to Q at
2
.
A.Whenever CLK=1.
B.Whenever CLK=0.
C.The rising edge of CLK.
D.The falling edge of CLK.
The architecture of a 4*3 memory is plotted in the figure below.If you want to store the value 8 in word 2, you should set
WE=
1
S1=
2
S0=
3
In2=
4
In1=
5
In0=
6
A.0
B.1
C.8
D.2
In the design of a finite state machine,
The state logic is
1
,
and the output logic is
2
.
A.Combinational logic
B.Sequential logic
C.Both combinational and sequential logic
D.Neither combinational nor sequential logic.
The state diagram of a finite state machine is plotted as follows. Which of the input sequence can let the state machine output 1?(Start at S0)
111011
110101
101011
111101
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