Bits & Bytes
What values can a binary digit represent
A) A binary digit can represent one of the values from 0 - 9.
B) A binary digit can only represent the value 1.
C) A binary digit can represent either the value 0 or 1.
D) A binary digit can only represent the value 0.
What is A binary digit can represent either the value 0 or 1?
Can binary code start with 0?
a. Yes
b. No
a. Yes
Lossy or lossless?
Inter-frame coding: Instead of storing every pixel for every frame, the computer stores the differences between the pixels.
What does it mean to the creator if their work is copyrighted?
-Reusing the user's works are banned in all case.
-It grants the creator legal rights to determine whether their work can be copied and under what conditions.
-People can access the creator's work through only one website.
-It grants the creator legal rights to determine whether their work can be copied and under what conditions.
What is true about the process of converting analog data into digital data?
A) The digital version contains all of the details of the analog data, as long as enough storage capacity is available.
B) To make the digital version be a more accurate representation of the analog data, the process should use fewer bits to represent each sample.
C) A longer interval between measured samples means more details will be captured in the conversion from analog to digital.
D) The digital version is a representation of the analog data but cannot include all of the details.
What is D) The digital version is a representation of the analog data but cannot include all of the details?
Which of these values can be stored in a single bit?
A) 2
B) [0, 1]
C) [2, 4]
D) 0
What is D) 0?
Why is the binary code necessary in computer?
a. No, usage of octal number is more necessary than the binary code.
b. It's the only way computer can understand the information.
c. It is the most common way for computer devices to ultimately send, receive, and store the information.
d.It is high compressed data.
c. It is the most common way for computer devices to ultimately send, receive, and store the information.
Consider the following:
-A still screenshot of the Apple homepage
-A 5-second video of the same Apple homepage
Is it possible for the video to take up less space than the image?
A) No, the video will always take up more space
B) Yes, if the video is compressed with a lossy compression algorithm
What is B) Yes, if the video is compressed with a lossy compression algorithm?
What happens once copyright has expired?
a. People can buy the work and declare it as theirs.
b. Creative works enter the public domain.
c. The work automatically disappears when copyrights expire.
b. Creative works enter the public domain.
Which types of data are stored on a computer using bits (multiple answers)?
1) Numbers
2) Text documents
3) Photos
What is numbers, text documents, and photos?
1011001010010010
How many bytes long is that sequence of bits?
A) 2
B) 8
C) 16
D) 4
What is A) 2?
Convert 210 to binary number.
11010010
Lossy or lossless?
Entropy coding: The computer replaces frequently occurring patterns of bits with shorter representations remembering the replacements in a table.
What is lossless?
Consider these files:
- A 3-second audio recording of a baby's first word.
- A 30-second video recording of a baby's first steps.
Is it possible for the 30-second video recording to have a smaller file size than the 3-second audio recording?
Choose 1 answer:
A. Yes, but only if the 30-second video is recorded with a smart phone.
B. Yes, but only if the 30-second video is saved using a patented standard.
c. Yes, if the 30-second video is compressed with a lossy compression algorithm.
D. No, the 30-second video will always take up more space than a 3-second audio recording.
c. Yes, if the 30-second video is compressed with a lossy compression algorithm.
A programmer is writing the code for a sports website that will use a variety of data sources. They want to understand which data sources are analog so that they can think carefully about the process of converting the analog data into digital data.
Which of these data sources is analog?
A) A list of teams competing in a lacrosse tournament
B) The final scores of ten basketball games
C) A swimmer's position in the pool as they swim from one end to the other
D) The number of players sitting on the bench during a basketball game
What is C) A swimmer's position in the pool as they swim from one end to the other?
Consider this binary data:
010101011101001011000000
Which choice puts a space after each byte?
A) 010101011101 001011000000
B) 01010101 11010010 11000000
C) 01 01 01 01 11 01 00 10 11 00 00 00
D) 0101 0101 1101 0010 1100 0000
What is B) 01010101 11010010 11000000
What would be the binary representation of the decimal number 44?
101100
Lossy or lossless?
Grayscale: converts the photo to black & white (256 shades of grey).
What is lossy?
What approach will allow fans to legally make memes of the photos?
Choose 1 answer:
A. The photographer should write "This work is licensed under a Creative Commons Attribution license."
B. The photographer should write "This work is licensed under a Creative Commons Attribution license."
C. The photographer should link to an open source license(like the MIT license) from the gallery page.
D. The photographer should write "copyright2019 Todd's Takes" under each of their photos
A. The photographer should write "This work is licensed under a Creative Commons Attribution license."
How many bits are in 4 bytes?
What is 32 bits?
How many bits are in 3 bytes.
Convert octal number 103 to binary number.
1000011
Invert: Inverts all the pixel colors and brightness values (i.e. black pixels become white pixels).
What is lossy?
Assuming US copyright laws, is Michelle allowed to use audio recordings of retro songs for his music videos?
A. He can use the audio recordings as long as he provides attribution, such as a singer name and link back go the site where he found them.
B. He can only use the audio recordings if they have been explicitly stated to be in the public domain; he can't use them if they're licensed any other way.
C. he can use the audio recordings if they have been explicitly licensed for re-use, like with a Creative Commons license, and he follows the conditions of that license.
D. If there is no explicit license declared next to the audio recordings, then the recordings are in the public domain and can be used freely for any purpose.C. he can use the audio recordings if they have been explicitly licensed for re-use, like with a Creative Commons license, and he follows the conditions of that license.
TSCII is a character encoding scheme that can encode text written in the Tamil language. TSCII uses one byte to encode each character.
This binary data is a TSCII encoding of a single Tamil word:
11111110110001001100010110111010
How many characters are encoded in that binary data?
What is 4?