Digital Information Unit Review

Front

How many bits make up a byte?

Back

8

Front

How do computers represent data, numbers, letters, and images?

Back

They use binary ( a base 2 system)

Front

_______ is a process for reducing the number of bits needed to represent something in which some of the information is lost and can not be reversed.

Back

Lossy Compression

Front

_______ is a process for reducing the number of bits needed to represent the information needed to represent something without losing any information. This process is reversible.

Back

Lossless Compression

Front

Digital images in computers are made of ___________.

Back

Pixels (bits)

Front

Which of the following best describes how computing devices represent information? A computer will either represent information as bits or bytes but not both, A computer represents data as a byte which is either a 0 or a 1, A computer represents data as bits which is either a 0 or a 1, A computer represents information as bits which contain 8 bytes.

Back

A computer represents data as bits which is either a 0 or a 1.

Front

Binary:

Back

A way of representing information using only two options

Front

Abstraction

Back

A simplified representation of something more complex. Abstractions allow you to hide details to help you manage complexity, focus on relevant concepts, and reason about problems at a higher level.

Front

ASCII

Back

American Standard Code for Information Interchange; the universally recognized raw text format that any computer can understand

Front

Which of the following is a reason to use lossy compression? You want the compressed file to be larger than the original. You want the highest quality audio file possible, with no modifications. You want the highest quality image file possible, with no modifications. You want to save space and are not concerned if the file is the highest quality possible.

Back

You want to save space and are not concerned if the file is the highest quality possible.