Information (numbers, words, measurements, observations, etc) that is in a computer-readable form.

Managing complexity by “removing” information and detail, in order to focus on the relevant concepts.

Defines how we represent numbers. Which digits we can use, and what each position (place ) in a number means.

Number system that has 2 digits, 0 and 1. This is how computers represent numbers at the base level.

The number system we use in out everyday lives. It has 10 digits, 0-9.

Number system that has 16 digits 1 - 9 and A - F.

Means “binary digit”. A bit is a single digit in a binary number. A bit can either be 0 or 1.

American Standard Code for Information Interchange protocol for encoding text information as bits. 7-bit character set containing 128 characters.

Encoding scheme allows us to encode colors such as numeric data. It defines the amount of Red, Green, and Blue light in a pixel.

An image can be represented as a grid of values. Each value encodes the color at that position in the image.

Encodes the color at that position in the image.

The process of encoding information, using fewer bits than the original representation.

Throwing away some of the data to save space. We can throw away a lot of data without any noticeable difference from the original.

Scrambling digital information into an unreadable form. Only those with verified authority (password, key, etc) can unscramble it to read it.

The process of encoding information, using fewer bits than the original representation.

The art and science of concealing secret messages in such a way that no one apart from the intended recipient knows about the existence of the message.