Data Representation/Structures Glossary

Question 1

Array

Answer 1

Data structure that holds a sort of list of similar data that are the same data type.

Question 2

ASCII

Answer 2

Character encoding standard for electronic communication.

Question 3

Binary

Answer 3

It’s a number system based in base 2. Computers can use this to work, by 0 being an off electric signal, and 1 is an on electric signal.

Question 4

Bit

Answer 4

A signal binary number representing 2 possible values.

Question 5

Bit Depth

Answer 5

The number of bits used to calculate one pixels colour in an image.

Question 6

Bitmap

Answer 6

Raw uncompressed bit data that translates to an image.

Question 7

Compression

Answer 7

A method to lower the size of a file.

Question 8

Data Type

Answer 8

What type of data is a variable, and how it can be used in logical calculations without causing an error.

Question 9

Floating Point

Answer 9

A data type that can represent decimal numbers or in other words numbers with a fractional part.

Question 10

Matrix

Answer 10

Data structure in which a grid of numbers is stored.

Question 11

Queue

Answer 11

A data structure which is an array where the first index is the item that has been in the array the longest and last index is the newest item in that array. (First in, First out)

Question 12

Stack

Answer 12

A data type which is an array but items that are pushed into the array get popped of the array first. (Last in, first out)

Question 13

Record

Answer 13

Like an array, where you store closely related data, but is not limited to one data type.

Question 14

Set

Answer 14

Like an array, but can only hold unique values.

Question 15

Resolution

Answer 15

The quality of an image or video. It’s how many pixels are used in the width and height.

Question 16

Unicode

Answer 16

Character encoding standard used in electronic communications.