Q1.
The four outputs of two 4-input multiplexers, connected to form a 16-input multiplexer, are connected together through a 4-input __________ gate
► AND
► OR
► NAND
► XOR
Q2.
Flip flops are also called _____________
► Bi-stable dualvibrators
► Bi-stable transformer
► Bi-stable multivibrators
► Bi-stable singlevibrators
Q3.
___________ is one of the examples of synchronous inputs.
► J-K input
► EN input
► Preset input (PRE)
► Clear Input (CLR)
Q4.
Given the state diagram of an up/down counter, we can find __________
► The next state of a present state
► The previous state of a present state
► Both the next and previous states of a given state
► The state diagram shows only the inputs/outputs of a given states
Q5.
At T0 the value stored in a 4-bit left shift was “1”. What will be the value of register after three clock pulses?
► 2
► 4
► 6
► 8
Q6.
A 8-bit serial in / parallel out shift register contains the value “8”, _____ clock signal(s) will be required to shift the value completely out of the register.
► 1
► 2
► 4
► 8
Q.7
When both the inputs of edge-triggered J-K flop-flop are set to logic zero _________
► The flop-flop is triggered
► Q=0 and Q’=1
► Q=1 and Q’=0
► The output of flip-flop remains unchanged
Q.8
The ___RCO_____ of first 74HC163 counter is connected to ___ ENT____ and ___ENP_____ inputs of other 74HC counter to form a single cascaded counter.
Q9
How many stats does a module 4 counter have?
1
2
4
16
Q10
How will a serial in and out shift register accept data serially
One bit at a time
8 bit
Only after a load plus
Only after being clear
Q11
Te invalid stat of SR latch occur when
S=1, R=0
S=0, R=1
S=1,R=1
S=0,R=0
Q12
To serially shift a byte of data in to a shift register there must be
1 clock plus
One load plus
8 clock plus
One clock plus for each in the data
Q13
What is the decimal value of the terminal count of 4 bit binary count
10
12
15
16
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