C omplete these sentences using the collocations studied during the lesson


Discuss computer measurement units based on cluster method



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II UNIT TASKS

Discuss computer measurement units based on cluster method.

Bits



Petabyte

Byte



Terabyte

Measurement units



Kilobyte



Gigabyte



Megabyte

9 TASK 1. Do the exercises based on the text of the lesson: Disks and drives.



    1. Look at the text and find:

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



    1. Complete this product description with words from part B of the text .

The Panasonic DVD-LS91 is a top-of-the-range (1)…………..portable DVD players………........................................................, which provides pure entertainment wherever you go.


It has a big 9 inch built-in stereo speakers allow you to listen along, or if you want to listen alone, just plug in a pair of (3)………headphones……………... .
This portable machine provides (4)…multi-format playback..,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.
10 TASK Write about OS, the functions of OS, and types of OS based on the text “Operating systems” and Help Box information based on Venn diagram method.

System software
Controls the basic functions of a computer




Application software
Lets you do specific jobs as writing letters, doing calculations, drawing or playing games

Common features
All of them are multitasking OS



11 TASK


Label the interface features (a-j) on the screenshot of Apple’s Mac OS X operating system with words in bold from this list.


d-Desktop: the background screen that displays icons and folders.
f-Window: a scrollable viewing area on screen; it can contain files and folders.
g-Icon: a picture representing an object; for example, a document, program folder or hard drive icon.
c-Folder: a directory that holds data, programs and other folders.
a-Menu bar: a row of words that open up menus when selected
b-Drop-down (pull down) menu: a list of options that appears below a menu item when selected.
h-Scroll bar: a horizontal or vertical bar that is clicked and dragged in the desired direction
j-Dock: set of icons at the bottom of the screen that give you access to the things you use most

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