BTEC_Unit 1_OnlineW_ Filecompress_L2_Lesson 5

• File compression
• Further Education (Key Stage 5)

Lesson 5 

File Compression

00:12

File are compressed so you can send

1. text
2. secure files
3. word documents
4. large files by email

00:36

What does file compression mean?

1. Make file bigger
2. Make file smaller
3. Make file more solid
4. None of these

01:05

Explain how to compress a file.

01:44

How would you see your file size.

03:46

What does 7-zip do compared to winzip

04:04

Name 3 file compression
tools.

What is File Compression?

File compression makes the file SMALLER so that they take up less space in the computer memory

File compression is also known as Zipping and it is done using an algorithm.

One file can be compressed or many files can be compressed into one.

File extension for compressed files include these:-

.Zip, rar, .7z, and .dmg 

Program used to Compress files 

Each file extension is created using a different compression algorithm. Therefore, the user compressing and expanding the files needs to use the same program 

Research and write down at least one Software used to Compress files

Give one reason for compression a file

Show how you would Compress a file and decompress a file using WinZip

00:00

Please watch this completely

How well do you understand file compression

I

Quite well

I need help

The End

You should know why you need to compress files

You should know how to compress a file.