2025 G09 CS Text, Image, Sound, Representations

Convert Denary into Binary:

254

• 1111 1100

• 1110 1111

• 1010 0101

• 1111 1110

Convert Binary into Denary:

0110 1100

• 108

• 107

• 106

• 109

Sound waves are analogue data. Computers cannot work with analogue data. So what is need to be done in order for computers to store sound waves.

• Sound waves need to be sampled.

  Can do this by ADC

  (Analogue to Digital Converter)

• Sound waves need to be recorded.

• Sound waves need to change frequency. By SWFC

  (Sound wave to frequency converter)

• Sound waves cannot be stored in computer from external sounds.

Bitmap images are made up of ______

Which of the following graphs represents an analogue wave?

• 
• 

How many characters can Unicode represent?

• 65,536
• 100,000
• 999
• 1000000000

Which of these statements are true about UNICODE

• You can store many more characters than ASCII

• Every character will take up more storage

• You can represent all of the characters of every language

• Complicated characters need more bits

Anil wants to create an animated icon for a website he is building. Which file format should he use to save his work?

• JPEG

• GIF

• BMP

• TIFF

The file has an extension of.wav. What is the type of file used?

The file has an extension of.mp3. What is the type of file used?