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401. |
For programmable logic functions, which type of PLD should be used? |
A. | pla |
B. | pal |
C. | cpld |
D. | sld |
Answer» B. pal |
402. |
The complex programmable logic device contains several PLD blocks and |
A. | a language compiler |
B. | and/or arrays |
C. | global interconnection matrix |
D. | field-programmable switches |
Answer» C. global interconnection matrix |
403. |
Which type of device FPGA are? |
A. | sld |
B. | srom |
C. | eprom |
D. | pld |
Answer» D. pld |
404. |
The difference between a PAL & a PLA is |
A. | pals and plas are the same thing |
B. | the pla has a programmable or plane and a programmable and plane, while the pal only has a programmable and plane |
C. | the pal has a programmable or plane and a programmable and plane, while the pla only has a programmable and plane |
D. | the pal has more possible product terms than the pla |
Answer» B. the pla has a programmable or plane and a programmable and plane, while the pal only has a programmable and plane |
405. |
If a PAL has been programmed once |
A. | its logic capacity is lost |
B. | its outputs are only active high |
C. | its outputs are only active low |
D. | it cannot be reprogrammed |
Answer» D. it cannot be reprogrammed |
406. |
The FPGA refers to |
A. | first programmable gate array |
B. | field programmable gate array |
C. | first program gate array |
D. | field program gate array |
Answer» B. field programmable gate array |
407. |
The full form of VLSI is |
A. | very long single integration |
B. | very least scale integration |
C. | very large scale integration |
D. | very long scale integration |
Answer» C. very large scale integration |
408. |
In FPGA, vertical and horizontal directions are separated by |
A. | a line |
B. | a channel |
C. | a strobe |
D. | a flip-flop |
Answer» B. a channel |
409. |
Applications of PLAs are |
A. | registered pals |
B. | configurable pals |
C. | pal programming |
D. | all of the mentioned |
Answer» D. all of the mentioned |
410. |
CMOS refers to |
A. | continuous metal oxide semiconductor |
B. | complementary metal oxide semiconductor |
C. | centred metal oxide semiconductor |
D. | concrete metal oxide semiconductor |
Answer» B. complementary metal oxide semiconductor |
411. |
Propagation delay is defined as |
A. | the time taken for the output of a gate to change after the inputs have changed |
B. | the time taken for the input of a gate to change after the outputs have changed |
C. | the time taken for the input of a gate to change after the intermediates have changed |
D. | the time taken for the output of a gate to change after the intermediates have changed |
Answer» A. the time taken for the output of a gate to change after the inputs have changed |
412. |
Propagation delay times can be divided as |
A. | t(plh) and t(lph) |
B. | t(lph) and t(phl) |
C. | t(plh) and t(phl) |
D. | t(hpl) and t(lph) |
Answer» C. t(plh) and t(phl) |
413. |
Power Dissipation in DIC is expressed in |
A. | watts or kilowatts |
B. | milliwatts or nanowatts |
C. | db |
D. | mdb |
Answer» B. milliwatts or nanowatts |
414. |
Fan-in is defined as |
A. | the number of outputs connected to gate without any degradation in the voltage levels |
B. | the number of inputs connected to gate without any degradation in the voltage levels |
C. | the number of outputs connected to gate with degradation in the voltage levels |
D. | the number of inputs connected to gate with degradation in the voltage levels |
Answer» B. the number of inputs connected to gate without any degradation in the voltage levels |
415. |
The maximum noise voltage that may appear at the input of a logic gate without changing the logical state of its output is termed as |
A. | noise margin |
B. | noise immunity |
C. | white noise |
D. | signal to noise ratio |
Answer» B. noise immunity |
416. |
The full form of ECL is |
A. | emitter-collector logic |
B. | emitter-complementary logic |
C. | emitter-coupled logic |
D. | emitter-cored logic |
Answer» C. emitter-coupled logic |
417. |
Which logic is the fastest of all the logic families? |
A. | ttl |
B. | ecl |
C. | htl |
D. | dtl |
Answer» B. ecl |
418. |
The full form of CML is |
A. | complementary mode logic |
B. | current mode logic |
C. | collector mode logic |
D. | collector mixed logic |
Answer» C. collector mode logic |
419. |
In an ECL the output is taken from |
A. | emitter |
B. | base |
C. | collector |
D. | junction of emitter and base |
Answer» C. collector |
420. |
The ECL behaves as |
A. | not gate |
B. | nor gate |
C. | nand gate |
D. | and gate |
Answer» B. nor gate |
421. |
In ECL the fanout capability is |
A. | high |
B. | low |
C. | zero |
D. | sometimes high and sometimes low |
Answer» A. high |
422. |
ECL’s major disadvantage is that |
A. | it requires more power |
B. | it’s fanout capability is high |
C. | it creates more noise |
D. | it is slow |
Answer» A. it requires more power |
423. |
The full form of SCFL is |
A. | source-collector logic |
B. | source-coupled logic |
C. | source-complementary logic |
D. | source cored logic |
Answer» B. source-coupled logic |
424. |
The equivalent of emitter-coupled logic made out of FETs is called |
A. | cml |
B. | scfl |
C. | fecl |
D. | efcl |
Answer» B. scfl |
425. |
ECL was invented in by |
A. | 1956, baker clamp |
B. | 1976, james r. biard |
C. | 1956, hannon s. yourke |
D. | 1976, yourke |
Answer» C. 1956, hannon s. yourke |
426. |
At the time of invention, an ECL was called as |
A. | source-coupled logic |
B. | current mode logic |
C. | current-steering logic |
D. | emitter-coupled logic |
Answer» C. current-steering logic |
427. |
The ECL circuits usually operates with |
A. | negative voltage |
B. | positive voltage |
C. | grounded voltage |
D. | high voltage |
Answer» A. negative voltage |
428. |
Low-voltage positive emitter-coupled logic (LVPECL) is a power optimized version of |
A. | ecl |
B. | vecl |
C. | pecl |
D. | lecl |
Answer» C. pecl |
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