Worksheet 50-Logic Gates Flashcards
What are the two states that describe the outputs/inputs of a logic circuit?
The inputs/outputs of a logic circuit or device are either a HIGH 1 or LOW 0.
What is the purpose of a logic gate in electrical diagrams?
Logic gates represent decision actions that are required for circuit operation.
What is “Logic Function” as it refers to gate operation?
Logic function is the relationship of the output to the inputs.
What is used to help describe all of the possible outcomes to a given input of a logic gate?
A truth table is used to plot all of the possible outputs against all of the possible input combinations.
What logic device is it that all inputs must be HIGH before a HIGH can be given at the output?
An AND gate is one where all inputs must be HIGH before a HIGH output is given.
What logic device is used as a single signal in and a single output device designed to invert the output from the input signal?
An inverter is a device whose function is to inverse the input signal at the output.
What is added to an AND gate that make it a NAND gate?
Adding an inverter to the output of an AND gate make it into a NAND gate.
What is used to plot the actions of various numbers and types of gates over time?
A logic signal chart is used to plot the actions of various gates over time.
What is the plot that cycles on and off in a predictable manner called on a chart?
A rhythmic signal on a logic signal chart is called the clock pulse.
LOW
PULSED
L or H
D
A
T3
T3, T7
T1, T5
T2
C
T4, T8
T1, T3, T5, T8
A
B
B
A
T3
T1
B
A
B
B
D
C
HIGH
T4
T1, T3, T4
FALSE
0
0
PULSED
HIGH
0
D
B
A, T4, T6, T8
LOW
0
D
A
