Upgrade to remove ads
AP Computer Science Principles Vocab 3
Terms in this set (11)
the standard fundamental unit (or "chunk size") underlying most computing systems today. You may have heard "megabyte", "kilobyte", "gigabyte", etc. which are all different amounts of a bytes. The technical term for 8 bits of data is a Byte.
a problem solving approach (algorithm) to find a satisfactory solution where finding an optimal or exact solution is impractical or impossible.
a data compression algorithm that allows the original data to be perfectly reconstructed from the compressed data.
(or irreversible compression) a data compression method that uses inexact approximations, discarding some data to represent the content. Most commonly seen in image formats like .jpg. - reduces a file by permanently eliminating certain information, especially redundant information.
to decrease the number of bits used to represent a piece of information.
a precise sequence of instructions designed to complete task.
Simply encoding the pixel data is not enough. We also need to encode the width and height of the image, or the image could not be recreated - other than through trial and error so what we've discovered is that the data for our image file must contain more than just a 0 or 1 for every pixel. It must contain other data that describes the pixel data. In this case the metadata encodes the width and height of the image.
Digital images can be stored in many formats, but one of the most common formats is "raster". Raster images store the image as an array of individual pixels, each of which has a particular color. Higher-quality images can be obtained by decreasing the size of the pixels (resolution). While full color will be addressed in the next lesson, an important idea here is that images on computer screens are created with light by illuminating pixels on the screen. This is why it is typical in a black and white image for the value 1 to represent white - it means turn the light on - and 0 represents black - light off. If you were drawing on paper you might do the inverse.
short for "picture element" it is the fundamental unit of a digital image, typically a tiny square or dot which contains a single point of color of a larger image. Each little dot that makes up a picture.
the RGB color model uses varying intensities of (R)ed, (G)reen, and (B)lue light are added together in to reproduce a broad array of colors.
Pulling out specific differences to make one solution work for multiple problems.
THIS SET IS OFTEN IN FOLDERS WITH...
AP Computer Science Principles Vocab 1
AP Computer Science Principles Vocab 2
AP Computer Science Principles Unit 2 Vocabulary
AP Computer Science Principles Unit 4 Vocab
YOU MIGHT ALSO LIKE...
AP Computer Science Principles Unit 2 Chapter 1
AP Computer Science Principles: Unit 2, Lessons 1-5
AP Computer Science - Unit 2, Chapter 1
AP CSP U2 Ch1
OTHER SETS BY THIS CREATOR
PSU Spanish 3 Exam 3
PSU Spanish 3 Exam 2
PSU Spanish 3 Exam 1 Vocabulary