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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

Author	Message
Arpita Groupie Joined: 04Jan2007 Online Status: Offline Posts: 73	Topic: Digital Circuits - Sample Qns............. Posted: 13Feb2007 at 5:50pm
	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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