Стр.138-139 Across the curriculum ГДЗ Комарова Ларионова 8 класс
5 Information and Communication Technology Across the curriculum The binary system All computers use the binary system, this is the computer’s own language.
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Приведем выдержку из задания из учебника Комарова, Ларионова 8 класс, Русское слово:
5 Information and Communication Technology
Across the curriculum
The binary system
All computers use the binary system, this is the computer’s own language. Information is coded as a sequence of binary digits (bits): numbers 0 and 1. Information coded in this way is digital.
1 Match the following binary digits (bits) to the equivalent decimal values.
1 101
2 10
3 1100
4 1001
5 11110
6 1010
7 11001000
8 1100000
a) 200
b) 12
c) 5
d) 10
e) 2
f) 96
g) 9
h) 30
2 Convert these decimal numbers to binary.
3 Information coded as eight binary digits make one byte.
a Which number in exercise 1 is 1 byte?
b How many bytes are there in a kilobyte (KB) of information?
Computers
4 Read the texts and choose the best title for each of them.
5 Are you familiar with any of the following words and acronyms? Use the information in the box to complete the texts below.
Windows
HTML
MP3
Linux
TIFF
Flash
HTM
jpg
zip
unzip
a All computers are empty machines or hardware until software is installed with an operating system. There are three main operating systems for personal computers: Microsoft (1) Windows and OSX are operating systems which you pay for.
(2) Linux is an Open Source operating system and it is available for free.
b When files are very large or heavy they are difficult to send by email. A (6) zip file is a file which has been compressed so that it is quicker and easier to send. When you receive one of these files you need to (7) unzip before you can access the files again.
c Different types of information need to be stored in different types of files. Data information is stored in a different way from images or audio. For example, (3) jpg and (4) TIFF are image files, whereas (5) MP3is an audio file.
d (8) HTML and (9) HTML are used to create web pages by designers. (10) Flash is especially useful when designers want to include animation.
Project
You are going to find out about Wi-Fi zones in your town or in a place nearby.
Plan
Find a map of the town or area that you have chosen and think about the type of places that may have Wi-Fi zones (libraries, bus and train terminals, etc.)
Research
Find out about Wi-Fi zones in your town or in a town nearby.
Prepare
Mark the places on your map. Use this symbol:
Present your material
Show your completed project to your classmates and teacher.