#learncswithsy #sadafyousuf #cswithsy #olevels #alevels #igcse #computerscience #paper1 #computersystems #filesizecalculation #bitmap #soundfile

The video aims to help learners of CS O Levels (2210), IGCSE(0478/0984) and A levels(9618) to understand the main concepts of image and sound file. They will also learn how to calculate the size of image and sound file.

Assalam alikum! Today, we delved into an interesting topic on file size calculations. Pay close attention, and you'll understand and remember this topic for a lifetime. Remember, this knowledge will also be beneficial in A levels. We started by understanding how bitmap images are represented, composed of pixels arranged in a 2D matrix. Pixels can take various shapes and are represented as binary values.

For instance, a black-and-white image requires one bit per pixel, representing either black or white. If each pixel is represented by two bits, there are four color combinations. Similarly, three bits per pixel result in eight color combinations. The formula for combinations is 2 to the power of the number of bits.

We discussed color depth, where an 8-bit color depth means 256 colors, and modern computers typically have a 24-bit color depth, offering over 16 million colors. Higher color depth increases file size. Image resolution, measured in pixels, was explained, and we discussed the drawbacks of high resolution, including increased file size and longer download times.

Moving on to a practical example, we calculated the size of a bitmap image using the formula: image resolution in pixels multiplied by color depth, then converted to bytes. Remember, never use a calculator for these calculations. A thorough simplification process allowed us to find the file size in Mi (megabytes).

We then applied the same principles to a scenario where Jessica wanted to store images on a USB flash memory drive. By multiplying pixels, color depth, and converting to Mi, we determined she could store 512 images in 52 MiB.

Transitioning to sound file calculations, we explored the formula for mono and stereo files. An example involved calculating the file size for a 60-minute stereo recording with a sample rate of 44,100 Hz and a resolution of 16 bits. The final size was 605 MiB, showcasing the application of our learned principles.

Feel free to ask any questions or seek clarification. Don't forget to like, subscribe, and share the knowledge with others. JazakAllah for being a part of this learning journey!

🏆Don't forget to like, share, and subscribe for more tutorials. Happy learning! 🎉

🎥MS Excel shorts playlist
🔗[ Ссылка ]


Watch more videos for O Level, IGCSE and A Levels Computer Science

Playlist Paper 1
🔗[ Ссылка ]

Playlist Paper 2
🔗[ Ссылка ]

Watch more videos of Computer Science Paper 2

Data Types
[ Ссылка ]

Functions
[ Ссылка ]

Loop Structures
[ Ссылка ]

Boolean Logic (Introduction)
[ Ссылка ]

Procedure and Functions in Pseudocode
[ Ссылка ]

Abstraction, decomposition
[ Ссылка ]


Watch more videos of Computer Science Paper 1


Procedure and Functions in Pseudocode
[ Ссылка ]

Data transmission & methods of error detection
[ Ссылка ]

Software and its types, Utility programs, types of computer languages and language translators
[ Ссылка ]

Conversion (denary, binary and hexadecimal)
[ Ссылка ]

Cyber security
[ Ссылка ]

Embedded systems
[ Ссылка ]

_________________________________________
Follow me
Facebook:[ Ссылка ]
Facebook Community: [ Ссылка ]

For more information contact
email: LearnCSwithSY@gmail.com

#sadafyousuf #learncswithsy #0478

_______________________________________________________
Happy learning! 💻🎓🌟

🙂Was this video lecture helpful??
share your thoughts and feedback in the comments 👍



#2210 #bitmap #soundfile #conversion #learncswithsy #sadafyousuf #computerscience

свернуть