Introduction to Digital Electronics

Temperature in nature represents a/an ____ signal.

• digital

• analog

• interruptible

• discrete

Which of the following is not a characteristics of an analog signal?

• Have a continuous values

• Signal in nature is analog

• Analog signal can be processed directly by a microprocessor

• Within a period of time, there is an infinite number of analog values

Which of the following is not a characteristic of a digital signal?

• Has discrete values

• Usually represented by digital binary

• The signal is represented by symbols/digits

• At any time instance, we can retrieve a digital value equivalent to analog signal

Select all advantages of digital signals.

• Easy to store

• Easy to design

• Greater accuracy and precision

• Less affected by noise

A periodic pulse waveform is one that repeats itself at a fixed interval, called a ______.

• period

• frequency

• duty cycle

• pulse width

A microprocessor clock is an example of a ______ signal.

• periodic

• non-periodic

• non-square wave

• random

The period for the shown signal is _____ ms.

• 60

• 15

• 45

• 30

The frequency for the shown signal is _____ Hz.

• 30.5

• 22.2

• 82.5

• 90.1

The duty cycle for the shown signal is _____ %.

• 30.0

• 54.2

• 33.3

• 45.5

______ is a graph of digital waveforms showing the actual time relationship of two or more waveforms and how each waveform changes in relation to the others.

• Timing diagram

• Periodic signal

• Truth table

• Data transfer