Vocab
A way of representing information using only two options
Binary:
A process for reducing the number of bits needed to represent something in which some information is lost or thrown away. This process is not reversible.
Lossy Compression:
Convert the decimal (base-10) number 20 to binary (base-2).
A. 10010
B. 00101
C. 11000
D. 10100
D. 10100
Which of the following best describes how computing devices represent information?
A. A computer will either represent information as bits or bytes but not both
B. A computer represents data as a byte which is either a 0 or a 1
C. A computer represents data as bits which is either a 0 or a 1
D. A computer represents information as bits which contain 8 bytes.
C. A computer represents data as bits which is either a 0 or a 1
Vine
8 bits
Byte:
Sampling:
What is
513 represented in binary?
1000000001
Which of the following is NOT true of how computers represent complex information?
A. Computing devices use patterns of bits to represent complex information
B. Abstraction helps represent complex information by surfacing complexity that might otherwise be hidden
C. Depending on context the same sequence of bits may represent different types of information
D. Common abstractions that are represented by computing devices include numbers, characters, and color.
B. Abstraction helps represent complex information by surfacing complexity that might otherwise be hidden
Speaking of TikTok that was recently banned from all NC government issued devices, What company/app was merged with TikTok in August of 2018?
Data that changes discretely through a finite set of possible values
Digital Data:
Analog Data:
Which of the following binary (base-2) numbers is LARGEST?
A. 11000000
B. 01111111
C. 00000001
D. 10111111
A. 11000000
Your computer uses 4 bits to represent decimal numbers (0, 1, 2, 3 and so on) in binary. What is the SMALLEST number for which an overflow error occur?
A. 14
B. 15
C. 16
D. 17
C. 16
At the end of January 2014, it was the most downloaded free game in the App Store for iOS. During this period, its developer said that ~This app~ was earning $50,000 a day from in-app advertisements as well as sales.
Flappy Bird
A process for reducing the number of bits needed to represent something without losing any information. This process is reversible.
Lossless Compression:
A contraction of "Binary Digit"; the single unit of information in a computer, typically represented as a 0 or 1
Bit:
How many total numbers can be represented with an 8-bit binary (base-2) system?
A. 127
B. 128
C. 255
D. 256
D. 256
Which of the following is true of how computers represent numbers?
A. Using a fixed but large number of bits can eliminate the possibility of round off error when representing numbers in binary
B. With a fixed number of bits some numbers are too large to represent in a computer which will lead to overflow errors.
C. Using a fixed but large number of bits, for example 128, eliminates the possibility of overflow errors.
D. With a large but fixed number of bits it is possible to eliminate either round-off errors or overflow errors, but not both.
B. With a fixed number of bits some numbers are too large to represent in a computer which will lead to overflow errors.
Back in August 2020, Apple banned this popular game on iOS devices. Players could no longer play the battle royale game on their Macbooks or iMacs. Even the mobile version of the game was removed from the Apple Store on iPhones and iPad
Fortnite
A work or invention that is the result of creativity, such as a piece of
Intellectual Property:
A collection of public copyright licenses that enable the free distribution of an otherwise copyrighted work, used when an author wants to give people the right to share, use, and build upon a work that they have created
Creative Commons:
What is 11111111 in Base-Ten Notation?
511
Ryan is designing an app that needs to quickly send low quality photos between users. Most smartphones take much higher quality photos than Ryan needs for his app. Which answer best describes the type of compression Ryan should choose and why?
A. Lossless compression since it ensures perfect reconstruction of the photo.
B. Lossy compression since it ensures perfect reconstruction of the photo.
C. Lossless compression since it typically results in smaller data sizes.
D. Lossy compression since it typically results in smaller data sizes.
D. Lossy compression since it typically results in smaller data sizes.
In 2010, the music industry was sweating! The recording companies alleged that this software was used to obtain and share unauthorized copies, and that facilitated this copyright infringement by distributing and maintaining the software.
Limewire/Bearshare/Napster