bitmap graphics

noun

Unit 10 — IT Lesson

Definition
Pictures made up of pixels arranged in a grid.

Example
Bitmap graphics are used to show images on Web pages.

burn

verb

Unit 10 — IT Lesson

Definition
Saving a digital song or other information to a blank CD-R.

Example
It is possible to burn a CD-R from files that are saved on your computer’s hard drive.

compressed file format

phrase

Unit 10 — IT Lesson

Definition
A way of saving digital files so they take up less space.

Example
If you put your files into compressed file format, you will be able to save a lot of space on your hard drive.

digital rights management (DRM)

noun

Unit 10 — IT Lesson

Definition
Technology that makes it harder to copy digital media without permission.

Example
By using digital rights management (DRM), companies can protect their files because it makes it harder to copy media without permission.

digitize

verb

Unit 10 — IT Lesson

Definition
Divide some type of media to small pieces and convert each piece to a number.

Example
It is possible to digitize film that was shot in analogue format.

e-book

noun

Unit 10 — IT Lesson

Definition
A novel or textbook that has been digitized.

Example
If you are interested, you can read an e-book over the Internet. Some very popular books are available to read online.

JPEG

noun

Unit 10 — IT Lesson

Definition
A lossy compressed file format for digital images.

Example
It is easy and common to send photos by using JPEG files. Many people send JPEG images in an e-mail attachment.

lossless

adjective

Unit 10 — IT Lesson

Definition
Compression that looks and sounds exactly like the original file.

Example
A lossless file is very close to the original file, whereas a lossy file is not as perfect.

lossy

adjective

Unit 10 — IT Lesson

Definition
Compression that loses some details of the original file.

Example
A lossy file, such as a JPEG, is used to save digital images.

Macromedia Flash

phrase

Unit 10 — IT Lesson

Definition
Software that lets you make or view vector graphic animation.

Example
You will need to install Macromedia Flash software on your computer if you want to make or view graphic animation.

pixel

noun

Unit 10 — IT Lesson

Definition
A single dot of colour in a digital picture.

Example
A higher pixel count for an image often means the picture is clearer.

PNG

noun

Unit 10 — IT Lesson

Definition
A lossless compressed file format for digital images.

Example
It is useful to use PNG to compress your digital image files if you want them to look exactly like the original image.

rip

verb

Unit 10 — IT Lesson

Definition
Copy an audio CD to your computer.

Example
You can rip a CD onto your computer in just a few minutes.

streaming

adjective

Unit 10 — IT Lesson

Definition
A way to listen to audio or video. This type of file plays as soon as it starts to arrive over the Internet.

Example
Streaming audio and video have made it possible to watch news broadcasts over the Internet.

vector graphics

noun

Unit 10 — IT Lesson

Definition
A digital image made up of geometric objects, such as circles, curves, and lines.

Example
Vector graphics are often used for making logos.