Unit 1: Digital Information

(short for binary digit) is the smallest unit of data in a computer. It has a single binary value, either 0 or 1

a unit of data that is eight binary digits long. They are often used to represent a character such as a letter, number, space

a numbering scheme in which there are only two possible values for each digit: 0 and 1.

a complete, well-defined sequence of steps for completing a task or solving a problem

a sequence of instructions or steps, written in a language that can be understood by a computer, that will be used by the computer to complete a task or solve a problem

Puzzle-piece shapes that are used to create code in Snap!.

Different types of blocks linked together.

An object in Snap! which performs functions controlled by scripts.

The background of a project, performs functions through scripting.

a mistake in the algorithm or program that causes it to behave incorrectly or unexpectedly

hand simulating the execution of program code in order to manually verify that it works correctly

the process of identifying and removing errors from computer hardware or software

American Standard Code for Information Interchange, a character encoding standard for electronic communication

an error that occurs when calculated data cannot fit within the designated field.

error that is produced when a computer is used to perform real number calculations because many real numbers can not be represented exactly on a computer.

occurs in a computer or similar device when a mathematical operation results in a number which is smaller than what the device is capable of storing.

a minute area of illumination on a display screen, one of many from which an image is composed.

(red, green, and blue) refers to a system for representing the colors to be used on a computer display. Red, green, and blue can be combined in various proportions to obtain any color in the visible spectrum.

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.

public copyright license that enables the free distribution of an otherwise copyrighted work. This is used when the content creator wants to give others to right to share, use and build upon the work they have created

programs that are made freely available and may be redistributed and modified;

online research output free of any and all restrictions on access and free of many restrictions on use, such as copyright or license restrictions

a data encoding and compression technique that deliberately discards some data in the compression process