Deck 2: Understanding Diode-Transistor Logic DTL and Other Logic Families
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Deck 2: Understanding Diode-Transistor Logic DTL and Other Logic Families
1
Diode-transistor logic (DTL) is the direct ancestor of
A)register-transistor logic
B)transistor-transistor logic
C)high threshold logic
D)emitter coupled logic
A)register-transistor logic
B)transistor-transistor logic
C)high threshold logic
D)emitter coupled logic
transistor-transistor logic
2
In DTL logic gating function is performed by
A)diode
B)transistor
C)inductor
D)capacitor
A)diode
B)transistor
C)inductor
D)capacitor
diode
3
In DTL amplifying function is performed by
A)diode
B)transistor
C)inductor
D)capacitor
A)diode
B)transistor
C)inductor
D)capacitor
transistor
4
How many stages a DTL consist of?
A)2
B)3
C)4
D)5
A)2
B)3
C)4
D)5
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5
The full form of CTDL is
A)complemented transistor diode logic
B)complemented transistor direct logic
C)complementary transistor diode logic
D)complementary transistor direct logic
A)complemented transistor diode logic
B)complemented transistor direct logic
C)complementary transistor diode logic
D)complementary transistor direct logic
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6
The DTL propagation delay is relatively
A)large
B)small
C)moderate
D)negligible
A)large
B)small
C)moderate
D)negligible
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7
The way to speed up DTL is to add an across intermediate resister is
A)small "speed-up" capacitor
B)large "speed-up" capacitor
C)small "speed-up" transistor
D)large " speed-up" transistor
A)small "speed-up" capacitor
B)large "speed-up" capacitor
C)small "speed-up" transistor
D)large " speed-up" transistor
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8
The process to avoid saturating the switching transistor is performed by
A)baker clamp
B)james r. biard
C)chris brown
D)totem-pole
A)baker clamp
B)james r. biard
C)chris brown
D)totem-pole
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9
A major advantage of DTL over the earlier resistor-transistor logic is the
A)increased fan out
B)increased fan in
C)decreased fan out
D)decreased fan in
A)increased fan out
B)increased fan in
C)decreased fan out
D)decreased fan in
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10
To increase fan-out of the gate in DTL
A)an additional capacitor may be used
B)an additional resister may be used
C)an additional transistor and diode may be used
D)only an additional diode may be used
A)an additional capacitor may be used
B)an additional resister may be used
C)an additional transistor and diode may be used
D)only an additional diode may be used
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11
A disadvantage of DTL is
A)the input transistor to the resister
B)the input resister to the transistor
C)the increased fan-in
D)the increased fan-out
A)the input transistor to the resister
B)the input resister to the transistor
C)the increased fan-in
D)the increased fan-out
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12
Compatibility refers to
A)the output of a circuit should match with the input of another circuit
B)the output of a circuit should match with the input of the same circuit
C)the input of a circuit should match with the output of another circuit
D)the input of a circuit should match with the output of same circuit
A)the output of a circuit should match with the input of another circuit
B)the output of a circuit should match with the input of the same circuit
C)the input of a circuit should match with the output of another circuit
D)the input of a circuit should match with the output of same circuit
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13
The method of connecting a driving device to a loading device is known as
A)compatibility
B)interface
C)sourcing
D)sinking
A)compatibility
B)interface
C)sourcing
D)sinking
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14
The first CML logic was introduced by General Electric in
A)1960
B)1981
C)1961
D)1990
A)1960
B)1981
C)1961
D)1990
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15
Schottky families prevent the saturating using
A)transistors
B)schottky transistors
C)diodes
D)schottky diodes
A)transistors
B)schottky transistors
C)diodes
D)schottky diodes
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16
The basic idea of basic CML circuit came from an
A)inverter
B)buffer
C)transistor
D)both inverter and buffer
A)inverter
B)buffer
C)transistor
D)both inverter and buffer
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17
The full form of MECL is
A)mono emitter coupled logic
B)motorola emitter coupled logic
C)motorola emitter capacitor logic
D)both mono emitter and motorola coupled logic
A)mono emitter coupled logic
B)motorola emitter coupled logic
C)motorola emitter capacitor logic
D)both mono emitter and motorola coupled logic
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18
Motorola has offered MECL circuits in logic families.
A)3
B)4
C)5
D)6
A)3
B)4
C)5
D)6
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19
The latest entrant to the ECL family is
A)ecl 10k
B)ecl 100k
C)ecl 1000k
D)ecl 10000k
A)ecl 10k
B)ecl 100k
C)ecl 1000k
D)ecl 10000k
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20
All input of NOR as low produces result as
A)low
B)mid
C)high
D)high impedance
A)low
B)mid
C)high
D)high impedance
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21
In RTL NOR gate, the output is at logic 1 only when all the inputs are at
A)logic 0
B)logic 1
C)+10v
D)floating
A)logic 0
B)logic 1
C)+10v
D)floating
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22
The full form of CMOS is
A)capacitive metal oxide semiconductor
B)capacitive metallic oxide semiconductor
C)complementary metal oxide semiconductor
D)complemented metal oxide semiconductor
A)capacitive metal oxide semiconductor
B)capacitive metallic oxide semiconductor
C)complementary metal oxide semiconductor
D)complemented metal oxide semiconductor
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23
The full form of COS-MOS is
A)complementary symmetry metal oxide semiconductor
B)complementary systematic metal oxide semiconductor
C)capacitive symmetry metal oxide semiconductor
D)complemented systematic metal oxide semiconductor
A)complementary symmetry metal oxide semiconductor
B)complementary systematic metal oxide semiconductor
C)capacitive symmetry metal oxide semiconductor
D)complemented systematic metal oxide semiconductor
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24
CMOS is also sometimes referred to as
A)capacitive metal oxide semiconductor
B)capacitive symmetry metal oxide semiconductor
C)complementary symmetry metal oxide semiconductor
D)complemented symmetry metal oxide semiconductor
A)capacitive metal oxide semiconductor
B)capacitive symmetry metal oxide semiconductor
C)complementary symmetry metal oxide semiconductor
D)complemented symmetry metal oxide semiconductor
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25
CMOS technology is used in
A)inverter
B)microprocessor
C)digital logic
D)both microprocessor and digital logic
A)inverter
B)microprocessor
C)digital logic
D)both microprocessor and digital logic
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