Introduction Flashcards
(32 cards)
What is digital electronics
It is a field of electronics that deals with the design, analysis, and application of circuits that process and use discrete digital signals. It involves the study of systems that make use of binary logic.
What are physical quantities
A physical quantity is any property that can be measured and expressed numerically along with a unit.
What are the two ways of representing values of physical quantities
Analog and Digital
What are Analog Quantities
Quantities that can take on a continuous range of values.
What does it mean to be continuous in nature
There are no gaps between those values.
Give Examples of Analog Quantities
What are Digital Quantities
These are quantities that are represented using discrete values.
What does it mean to be discrete in nature
You jump from one value to another. No values in between.
Give examples of digital quantities
Binary, counting people, digital clock
What are Analog systems
These are devices that manipulate physical quantities represented in analog form.
What are Digital systems
These are systems that manipulate physical quantities that are represented in digital form.
What are some advantages of digital technology
Easy to design, greater accuracy and precision, easier information storage.
What are some limitations of digital circuits
Most physical quantities are analog in nature, so they have to be converted to digital and back to analog.
What is binary number system
It is a number system that makes use of two digits: 0 and 1.
What is Logic level
This is the voltage that is used to represent bits in a digital system.
What is a Waveform
This is a graphical representation of how a signal varies over time.
What is a Waveform as it relates to digital electronics
It is a series of pulses or pulse trains.
What is a periodic waveform
This is a type of waveform that repeats itself at periodic intervals.
What is a non-periodic waveform
This is a waveform that does not repeat at periodic intervals.
What is a pulse
This is a brief digital signal that transitions from low to high and back to low.
What are the types of pulse
Positive pulse, negative pulse, pulse train (sequence of continuous pulses at regular intervals), single pulse.
What are the characteristics of a pulse
Rise time, Fall time, Pulse Width, Overshoot, Ringing.
What is rise time
This is the time required for a pulse to go from its low voltage level to its high voltage level.
What is fall time
This is the time required for a pulse to go from its high voltage level to its low voltage level.
