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CS302 Quiz No.3 Shared by Iram

Question # 1 of 10 ( Start time: 07:50:01 PM )  Total Marks: 1
A counter is implemented using three (3) flip-flops, possibly it will have ________ maximum output status.
Select correct option:
 3
 7
 8  ok
 15


Question # 2 of 10 ( Start time: 07:50:36 PM )  Total Marks: 1
If a circuit suffers “Clock Skew “ problem, the output of circuit can’t be guarantied.
Select correct option:
 True  ok
 False


Question # 3 of 10 ( Start time: 07:50:46 PM )  Total Marks: 1
When the both inputs of edge-triggered J-K flop-flop are set to logic zero _________
Select correct option:
 The flop-flop is triggered
 Q=0 and Q’=1
 Q=1 and Q’=0  ok
 The output of flip-flop remains unchanged


Question # 4 of 10 ( Start time: 07:52:11 PM )  Total Marks: 1
A positive edge-triggered flip-flop changes its state when ________________
Select correct option:
 Enable input (EN) is set
 Preset input (PRE) is set
 Low-to-high transition of clock  ok
 High-to-low transition of clock


Question # 5 of 10 ( Start time: 07:52:36 PM )  Total Marks: 1
We have a digital circuit. Different parts of circuit operate at different clock frequencies (4MHZ, 2MHZ and 1MHZ), but we have a single clock source having a fix clock frequency (4MHZ), to supply the required frequency to each part of circuit, we can get help by using ___________
Select correct option:
 Using S-R Flop-Flop
 D-flipflop
 J-K flip-flop  ok
 T-Flip-Flop


Question # 6 of 10 ( Start time: 07:53:36 PM )  Total Marks: 1
A modulus-14 counter has fourteen states requiring_____________
Select correct option:
 14 Flip Flops
 14 Registers
 4 Flip Flops
 4 Registers


Question # 7 of 10 ( Start time: 07:54:59 PM )  Total Marks: 1
The minimum time required for the input logic levels to remain stable before the clock transition occurs is known as the ___________
Select correct option:
 Set-up time  ok
 Hold time
 Pulse Interval time
 Pulse Stability time (PST)


Question # 8 of 10 ( Start time: 07:55:21 PM )  Total Marks: 1
In a 4-bit binary counter, the next state after the terminal count in the DOWN mode is ____________
Select correct option:
 0000
 1111  ok
 0001
 10000


Question # 9 of 10 ( Start time: 07:55:48 PM )  Total Marks: 1
________ flip-flops are obsolete now.
Select correct option:
 Edge-triggered
 Master-Slave  ok
 T-Flipflop
 D-Flipflop


Question # 10 of 10 ( Start time: 07:56:23 PM )  Total Marks: 1
A mono-stable device only has a single stable state
Select correct option:
 True  ok
 False

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