What is compression? OCR GCSE (J277) 9-1 Computer Science

In this session - What is compression? Why would you compress a file? What are the two types of compression? What is lossy compression? Advantages & disadvantages of lossy compression, what is lossless compression? Advantages and disadvantages of lossless compression

Chapters:
0:00 Intro
0:11 What is compression?
0:44 Why use compression?
1:36 Types of compression
1:42 Lossy compression
4:02 Lossless compression
5:53 Exam questions on compression

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I'd recommend pausing the video on the questions at the end to test yourself on this topic - additionally, make yourself flash cards to test yourself, example:

On the front: what affects the CPU performance?
On the back: The CPU clock speed will determine how many FDE cycles can be performed in one second. The CPU can execute more instructions with additional cores as each core works independently.

Mr Moore

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OCR Computer Science
OCR Computer Science
Computer Science GCSE
Mr Moore Computer Science
Mr Moore GCSE Computer Science
9-1 OCR Computer Science
1.1 systems architecture
J277
J277 computer science j277 revision
Computer science revision
OCR j277 computer science
What is compression?
What is compression?
lossy compression
lossless compression
lossy and lossless compression
lossy compression explained
lossless compression explained