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Internet Glossary

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HTML HTML

Hypertext Markup Language

HTML

HTML Tag HTML

Tags are the building blocks of an HTML document

Tag

<img> Tag HTML

Allows adding an image to a web page. It is self-closing. The attributes of an `<img>` tag include `src`, which specifies where to get the image from (the url for an image ), and `width` and `height` attributes, which specify the size of the image in pixels.

HTML Lists HTML

Way to organize information with a simple structure that is easy to read and write on a webpage. There are ordered and unordered HTML lists.

<ul> Tag HTML

Defines an unordered list in HTML.

<li> Tag HTML

defines a list item inside an HMTL list.

HTML Tables HTML

Tables display information in a grid.

Style Attribute HTML

Allows adding several different types of styles to HTML elements.

CSS CSS

Cascading Style Sheets. The language for designing web pages and adding style.

Selector CSS

Defines which HTML elements a CSS rule applies to.

Class Attribute HTML

`class` is an attribute we can add to HTML tags in order to style a specific group of elements.

id Attribute HTML

`id` is an attribute we can add to an HTML tag to style that specific element.

URL General

Stands for Uniform Resource Locator. You are locating a resource that exists somewhere on the internet.

HTML Documentation HTML

Documentation and syntax for HTML

html docs html documentation

Internet General

A philosophy of making information and knowledge open and accessible to all people. A network of networks built on open, agreed upon protocols.

Protocol General

A widely agreed upon set of rules that standardize communication between machines.

Citizen Science General

Science that harnesses the power of many individuals to solve hard, complex problems.

Data General

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

Number System General

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

Decimal Number System General

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

Binary Number System General

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

Hexadecimal Number System General

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

Number System General

A number system defines how we represent numbers. It defines which digits we can use, and what value each position (place value) in a number has.

Binary General

The binary number system is the Base 2 Number System. It is a number system that only uses 2 digits (0 and 1).

Bit General

Bit means "binary digit". A bit is a single digit in a binary number. A bit can either be 0 or 1.

ASCII General

ASCII is the standard protocol for encoding text information as bits. The ASCII table assigns a unique binary number to every text character.

RGB Encoding General

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

Pixel Image General

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

Number System General

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

Hexadecimal Number System General

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

Pixel General

Images are made up of pixels, which are essentially a grid of values. Each value, or pixel, encodes the color at that position in the image.

RGB Color Encoding General

The RGB encoding scheme allows us to encode colors as numeric data. It defines the amount of Red, Green, and Blue light in a pixel. Each color channel can have a value between 0 and 255.

Network General

A group of two or more computer systems linked together.

Fiber Optic Cables General

Able to send bits from router to router across long distances, but they are very expensive.

Bitrate General

The amount of data (in bits) that can be sent in a fixed amount of time.

Bandwidth General

The capacity of data transfer in a system. Measured by bitrate.

Latency General

The latency of a system is the time it takes for a bit to travel from sender to receiver. Fiber optic cables have low latency.

Internet Protocol (IP) General

A protocol that defines the structure of an Internet address and assigns a unique address to every device on the Internet.

Domain Name System (DNS) General

Used to translate domain names into IP addresses.

Routing General

The process of sending data between two computers on the internet. The data is sent through routers that determine the route.

Redundancy General

When multiple paths exist between two points. This improves reliability and makes the internet fault tolerable. Makes the routing system scalable.

Packets General

Packets are the units of data that are sent over the network.

HTTP General

HyperText Transfer Protocol is a protocol that standardizes the language for talking to web servers to send and receive web pages, or HyperText information (HTML pages).