IGCSE Computer Science 2023-25 - (1) Data Representation - 1.2(a) Text, Sound and Images

VIDEO: 1.2(a) Text, Sound and Images
IGCSE Computer Science 2023-25 - (1) Data Representation
Computer Science Syllabus
Cambridge IGCSE™ (9–1 0984) (A*-C 0478)
For exams in 2023, 2024 and 2025.

VIDEO to support
TOPIC 1 : Data Representation and the first study area: Text, sound and images - 1.2(a) Character sets – ASCII code and Unicode, Representation of sound, Representation of (bitmap) images.

Cambridge IGCSE Computer Science helps learners develop an interest in computational thinking and an understanding of the principles of problem-solving using computers. They apply this understanding to create computer-based solutions to problems using algorithms and a high-level programming language. Learners also develop a range of technical skills, and the ability to effectively test and evaluate computing solutions.

Studying Cambridge IGCSE Computer Science helps learners appreciate current and emerging computing technologies, the benefits of their use and recognise their potential risks. It provides an ideal foundation for progression to Cambridge International AS & A Level and is valuable for other areas of study and everyday life.

[CRICKETLOVERS-ljid]

A month back i achieved an A* in mid terms. thank you!!!

[gazey]

Binge watching your whole igcse playlist for my computer science exam this week

[ahmeddraza]

This helped me so much for my exams. Thank you !

[sponge]

you literally teach better than my school teacher

[AliAhmed-qsgd]

You love Sir 💗
Love from Pakistan 🇵🇰♥️❤️

[WARDAHMBJASIR]

A very good short video to revise thoroughly before the main exam. Thank you so much.

[yazanhousrom]

Hello Sir, Thank you so much for these videos, they have helped me a lot as there are no resources for these newly introduced IGCSE computer science topics.
I was wondering if you knew any websites we could use for questions concerning these topics.
Thanks a lot ❤

[falconabdvfx]

Thank you so much, this was very effective 😊

[alizeeshan]

Assalam-o-Alaikum... Sir... how the control codes in hexadecimal be 00 to 19??? Shouldn't it will be from 00 to 1F???

[cookingstyles]

Plz send video of conversion practise denary to binary to denary to hexadecimal to binary and hexadimal to denary

[mazenzaheer]

Sir at 3:56 it's written that unicode can use either 8, 16 or 32 bits PER character
But at 4:06 you said that 32 bits can store upto 2.15 billion characters.
This confused me 😔

And sir at 6:42 you stated that since amplitude range is 0-10 we can use 4 bit binary. Sir if it was even 0-15 we could've used 4 bit binary right? (As 15 is 1111 in binary). If it had been 16 the we would've needed an 8 bit binary, right?

[pushminderkang]

Can you please solve the Exam style Question given at the back of the chapter.

[shayanmazahir]

will the new syllabus for computer be completed before may/june session???

[someone-uzne]

Can you please share the link of the slides?

[gamedemicjunior]

sir do you have past pa[per attempt videos?

[alizeeshan]

At 10:31 ... Is it okay to represent white cells with 0 and black cells with 1???

[MuhammadAkhtar-fbsk]

Sir can you plz tell that how sampling is used to record a sound clip

[anindyadutta]

how is the number of characters calculated from bits

[nice]

Why can the 32 bits only store 2.13 billion my calculator shows 2^32 is 4.3 billion

[englishlearners]

I just turned on my sound to hundred but your voice is slow