VOCABULARY PRACTICE SECTION 1. 1. Decide if the sentences are true or false.

1. Decide if the sentences are true or false.

1. Besides CDs and DVDs, there are other types of optical storage; e.g. Blu-ray and HD-DVD.

2. CDs are 120 mm in diameter and 12 mm thick. DVDs are 122 mm in diameter and 12.5 mm thick.

3. DVDs have more tracks, and the pits used to store data are smaller; they have a greater storage capacity than CDs.

4. DVDs can be played on CD players, so there's no need to invest in new hardware.

5. Blu-ray may soon become the dominant optical storage technology, although Toshiba, Microsoft and the DVD Forum are supporting HD-DVD technology instead.

2. Look back into the Key Information Section and find:

1. the CD and DVD formats that can be rewritten many times
2. the CD and DVD formats that can be written to by the user only once
3. the CD and DVD formats that can be read by a computer but not written to
4. the type of cards used in digital cameras
5. a type of drive that plugs into a USB port and lets you share photos and music with friends
6. the memory without moving parts; it is erasable, non-volatile and used in small devices
7. the expression that means to 'initialize a disk and prepare it to receive data'

3. Complete this product description with the words from the text in the box.

Portable DVD players let you watch movies or TV, play games and listen to music, wherever you are. They usually run on batteries, have a widescreen (rectangular 16:9 format) LCD and support multi-format playback, allowing you access to many file formats including DVD video, JPEG pictures, MP3 music, etc. They have two built-in stereo speakers, or headphones if you don't want to disturb other people.

The Panasonic DVD-LS91 is a top-of-the-range ……., which provides pure entertainment wherever you go. It has a big 9 inch built-in ……. LCD, so you can really enjoy movies. The built-in stereo speakers allow you to listen along, or if you want to listen alone, just plug in a pair of ……. This portable machine provides ……. , so you can play DVD Audio/Video, CD-R/RW, DVD-RAM, DivX and MP3 files. Its compact design features a built-in rechargeable 6 hour battery pack.

The DVD-LS91 allows 6 hours of playback, and provides a perfect way to entertain yourself and your kids during long trips.

4. Fill in the missing letters to make a term related to optical storage. Complete these extracts from

an ICT textbook using these terms. You may have to use the plural form.	dual l…….
optical d……. laser b…...	backward-с……. double-s…….	multi-f……. Blu-r…….

1. Portable DVD players usually support ……. playback; this means the user can watch a wider variety of different file types (DivX, MP4, etc.).
2. ……. differ from magnetic ones, in terms of both internal structure and storage capacity.
3. CDs and DVDs are read using a red …...... In ..….. discs it is blue-violet, hence the name.
4. Unlike a CD, a DVD can be ……. and ……., giving it a capacity of up to 17GB.
5. DVD drives are ……. , meaning that they can play older technologies such as CD-ROMs.

5. Which device or format would be most suitable for storing these things and why?

• the operating system and the programs on the home computer
• an electronic encyclopedia
• a movie in digital format, hold several movies in different languages
• the music tracks by your favourite artist
• all the files generated by a company in one day
• the photos taken with a digital camera