Subsection 05a/b Logic circuits Flashcards
A CMOS logic gate is operated from a 12v supply, if a voltage of 3v is measured at the input to the gate this would be considered?
LOGIC 0
LOGIC 1 may be represented in an analogue system by ( where Q is an output of a latch/flip-flop) = ?
Positive/ Magnetised/ Q
A Logic gate having 12-50 gates is an example of?
MSI
A NAND and NOR to become a NOT gate have?
Their inputs connected together
A NOR gate with both inputs inverted becomes?
an AND gate
A schematic diagram for a flap warning system is most likely to include?
Both AND + OR gates
A standard quad TTL NAND gate is an example of?
LSI technology
Adding invertors to the two inputs of an AND gate makes a?
NOR
AND gate output is 1 when inputs are?
Both 1
An AND gate with inverted inputs and an inverted output is equivalent to?
An OR gate
An Aircraft system most likely to use a system of logic gates would be?
Landing gear
In positive logic representation, state 1 is?
More positive than 0
Logic gates internal operating mechanisms are produced from?
Transistors
Making an inverter from a NAND or NOR gate is achieved by?
Connecting the inputs
Switching within logic gates is normally achieved with?
Diodes
The most appropriate logic family for use in a portable of test equipment is?
MOS
The output of a NOT gate is 1, the input is?
0
The output of a NOT gate is 1, the input is?
0
The output of an AND gate having two inputs A+B is logic 1, the two inputs will have the logic states of?
A=1 B=1
The output of an OR gate having two inputs A+B is logic 0 the two inputs will have the logic states of?
A=0 B=0
The truth table of A=0011 B=0101 and X=0110 indicates that the logic device is?
An exclusive OR gate
What logic gate will only give an output logic 1 when both A+B inputs are either both logic 1 or both logic 0?
A NOT XOR gate
What sort of gate requires either input negative or two negative input voltages to operate?
NAND
What sort of gate requires two positive voltages to operate?
AND
