Que. 1 Which one of the following is equivalent to AND-OR realization?
A NAND-NOR realization
B NOR-NOR realization
C NOR-NAND realization
D NAND-NAND realization
Que. 2 The minimal function that can detect a " divisible by 3" 8421 BCD code
digit is given by
A D3D1+D4D2+D3D2D1
B D3D1+D4D2D1+D1'D2D1+D3D4D2'D1'
C D4D1+D4D2+D3D1'D2'D1
D D4D2D1'+D4'D2D1+D3D4D2D1
Que. 3 choose the correct statement from the following
A PROM contains a progrmmable AND array and a fixed OR array
B PLA contains a fixed AND array and a programmable OR array
C PROM contains a fixed AND array and a programmable OR array
D PLA contains a programmable AND array and a programmable OR array
Que. 4 A PLA can be used
A as a microprocessor
B as a dynamic memory
C to realise a sequential logic
D to realise a combitional logic
Que. 5 A dynamic RAM consist of
A 6 transistors
B 2 transistors and 2 capacitors
C 1 transistors and 1 capacitors
D 2 capacitors only
Que. 6 When a CPU is interrupted, it
A stops execution of instrution
B acknowledges interrupt and branches of subroutine
C acknowledges interrupt and continues
D acknowledges interrupt and waits for the next instrutions from the interrupting device
Que. 7 The advantage of using a dual slop ADC in a digital voltmeter is that
A its conversion time is small
B its accuracy is high
C its gives output in BCD FORMAT
D it does not required a comparator
Que. 8 The minimum number of comparators required to build an 8 bit flash ACD
is
A 8
B 63
C 255
D 256
Que. 9 The number of address lines in a 8 bit 4k ROM is
A 8
B 10
C 12
D 16
Que. 10 The master-slave flip flop has the characteristic that
A change in the input immediately in the output
B change in the output occurs when the state of the master is affected
C change in the output occurs when the state of the slave is affected
D both the master and slave states are affected at the same time
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