Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Fundamentals of Logic Design > Understanding the Digital Domain > Flashcards

Understanding the Digital Domain Flashcards

1
Q

What was the first type of switch used within computers?

A

Vacuum tube

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

_____ law states that the number of transistors on an integrated circuit doubles every 18 months.

A

Moore’s

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Alternative name for an integrated circuit

A

Chip

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

The power of a modern computer is essentially governed by the number of ____

A

Transistors

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Who was the co-founder of Intel?

A

Gordon Moore

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What type of signal varies smoothly and continuously over time?

A

Analog signal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

There are a(n) _____ number of signal values within an analog signal.

A

Infinite

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What term refers to a countable number of measurements?

A

Discrete

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q 
Which of the following are examples of analog devices?
A) mercury thermometer
B) traditional camera(film camera)
C) videocassette(VHS or Betamax)
D) all of the above
A

D) all of the above

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q 
Which of the following are examples of digital devices?
A) mercury thermometer
B) traditional camera
C) computer
D) both b and c
A

C) computer

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

The duration of pulses within a signal is also called the ____ and is measured in terms of seconds.

A

Bit period

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Bit period and ____ are inversely related to each other.

A

Data rate

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

A 6.5MB digital file stored on a hard disk contains ____ bits.

A

54,525,952

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

A 2.5KB digital file contains ____ bits.

A

20,480

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

In digital systems, ____ can be effectively filtered out if it’s level is not too great.

A

Noise

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Digital information, especially digital images and movies, is highly amenable to ____ because it contains an abundant amount of repetition.

A

Compression

17
Q

What form of energy may be used to transport bits efficiently over a wireless communication system?

A

Radio frequency

18
Q 
Which of the following are examples of transmission cables?
A) copper wire
B) fiber optic cable
C) air
D) all of the above
A

D) all of the above

19
Q 
Which of the following are examples of transmission media used to transport electrical signals?
A) copper wire
B) fiber optic cable
C) none of the above
D) both a and b
A

A) copper wire

20
Q 
Which of the following is a measure of electricity?
A) degrees celsius
B) volts
C) seconds
D) all of the above
A

B) volts

21
Q

Calculate the data rate if the bit period of a signal is 0.4 microseconds.

A

2.5Mbps

22
Q

Calculate the data rate if the bit period of a signal is 0.0000005 seconds.

A

2 Mbps

23
Q

Calculate the bit period of a signal if the data rate is 2.5 Kbps

A

0.0004 seconds

24
Q

What multiplier has a value of 1,000,000 within context of transmission?

A

Mega

25
Q

Which multiplier has a value of 1,048,576 within context of storage?

A

Mega

26
Q

Calculate how many bits there are stored in an 8 KB digital audio file.

A

65,536 bits

27
Q

Calculate how many Megabytes there are in 41,943,040 bits.

A

5 MB

28
Q

A digital video system uses a display format of 1024 by 767 pixels. Each pixel is coded using 32 bits. The system uses AC current line (60Hz) for synchronization so the refresh rate is 60 screens/sec. What is the minimum size of the video memory, given in Gigabytes(GB), required to store one second of video? Assume no compression is used. Round to nearest hundredth decimal.

A

0.18GB

29
Q 
Which of the following are classified as optical storage media?
A) hard disk
B) CD
C) DVD
D) both b and c
A

D) both b and c

30
Q 
Which of the following are classified as magnetic storage media?
A) hard disk
B) floppy disk
C) DVD
D) both a and b
A

D) both a and b

31
Q

Which of the following are advantages of the digital domain?
A) ability for noise removal
B) vulnerability to the addition of noise
C) ability for compression
D) both a and c
E) none of the above

A

D) both a and c

32
Q 
Which of the following is a technique that may be used to manage errors within digital communication systems? 
A) compression algorithms
B) encryption algorithms
C) error control schemes
D) both b and c
A

C) error control schemes

33
Q

When music is recorded on a CD, a digital recording device samples the sound 44,100 times per second. Each sample is 2 bytes(16 bits) long, and a separate sample is taken for each of the two speakers in a stereo system. Therefore each second of sound on the CD requires ______ bytes of memory.

A

176,400

34
Q

If an analog signal has frequency components up to 25,000 Hz, what would be the minimum sampling rate to satisfy Nyquist Law?

A

50,000

35
Q

In April 1989, Intel announced the introduction of the Microprocessor 80486 as the most advanced high performance Integrated Circuit thus far. It uses close to one million transistors. According to Moore’s Law, what was the closest to date it was expected to reach two million transistors circuits?

A

October 1990

36
Q

The output voltage of a certain device that uses CMOS family of IC’s is measured to be 1.6 Volts on a maximum of 3 Volts. This output will correspond to a logic value of ____.

A

Undefined

37
Q

Data compression ratio is defined as the ratio between the uncompressed size and compressed size, thus a representation that compresses a 20MB file to 5MB has a compression ratio of ____

A

4:1

38
Q

If a given signal contains frequencies up to 300 KHz, using Nyquist Law, the slowest we can sample this signal is ____

A

600 KHz

39
Q

An old RAM memory chip has 10,240 bytes. The size of the memory in Kbytes is _____

A

10 Kbytes

Fundamentals of Logic Design (2 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions