Q.1
If a PAL has been programmed once
  • its logic capacity is lost
  • its outputs are only active high
  • its outputs are only active low
  • it cannot be reprogrammed
Q.2
The difference between a PAL & a PLA is
  • pals and plas are the same thing
  • the pla has a programmable or plane and a programmable and plane, while the pal only has a programmable and plane
  • the pal has a programmable or plane and a programmable and plane, while the pla only has a programmable and plane
  • the pal has more possible product terms than the pla
Q.3
Which type of device FPGA are?
  • sld
  • srom
  • eprom
  • pld
Q.4
The complex programmable logic device contains several PLD blocks and
  • a language compiler
  • and/or arrays
  • global interconnection matrix
  • field-programmable switches
Q.5
For programmable logic functions, which type of PLD should be used?
  • pla
  • pal
  • cpld
  • sld
Q.6
Which one of the following is volatile in nature?
  • rom
  • erom
  • prom
  • ram
Q.7
Static RAM employs
  • bjt or mosfet
  • fet or jfet
  • capacitor or bjt
  • bjt or mos
Q.8
Dynamic RAM employs
  • capacitor or mosfet
  • fet or jfet
  • capacitor or bjt
  • bjt or mos
Q.9
The magnetic core memories have been replaced by semiconductor RAMs, why?
  • semiconductor rams are highly flexible
  • semiconductor rams have highest storing capacity
  • semiconductor rams are smaller in size
  • all of the mentioned
Q.10
The data written in flip-flop remains stored as long as
  • power is supplied
  • power is removed
  • power is supplied
  • power is removed
Q.11
What is memory decoding?
  • the process of memory ic used in a digital system is overloaded with data
  • the process of memory ic used in a digital system is selected for the range of address assigned
  • the process of memory ic used in a digital system is selected for the range of data assigned
  • the process of memory ic used in a digital system is overloaded with data allocated in memory cell
Q.12
How many address bits are required to select memory location in Memory decoder?
  • 4 kb
  • 8 kb
  • 12 kb
  • 16 kb
Q.13
The first step in the design of memory decoder is
  • selection of a eprom
  • selection of a ram
  • address assignment
  • data insertion
Q.14
PLA is used to implement
  • a complex sequential circuit
  • a simple sequential circuit
  • a complex combinational circuit
  • a simple combinational circuit
Q.15
How many types of PLD is?
  • 2
  • 3
  • 4
  • 5
Q.16
Logic circuits can also be designed using
  • ram
  • rom
  • pld
  • pla
Q.17
PLD contains a large number of
  • flip-flops
  • gates
  • registers
  • all of the mentioned
Q.18
A PLA is similar to a ROM in concept except that
  • it hasn’t capability to read only
  • it hasn’t capability to read or write operation
  • it doesn’t provide full decoding to the variables
  • it hasn’t capability to write only
Q.19
ICis organised as
  • 512 * 4
  • 16 * 1
  • 32 * 4
  • 64 * 2
Q.20
How memory expansion is done?
  • by increasing the supply voltage of the memory ics
  • by decreasing the supply voltage of the memory ics
  • by connecting memory ics together
  • by separating memory ics
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