Colour Depth (3 marks)
Describe what is meant by the term ‘colour depth’ in digital images and how increasing the colour depth affects the image quality and file size.
Colour Depth (3 marks) Read More »
1.2 – Memory and Storage
Metadata in Images (2 marks)
What is metadata in the context of digital images, and give two examples of information it might contain.
Metadata in Images (2 marks) Read More »
Understanding Binary Representation of Images (2 marks)
Explain how an image is represented using pixels and binary code.
Understanding Binary Representation of Images (2 marks) Read More »
Understanding Character Sets and Bits (4 Marks)
How does the number of bits per character in a character set influence the number of unique characters that can be represented? Provide examples from ASCII and Unicode.
Understanding Character Sets and Bits (4 Marks) Read More »
Character Sets (3 Marks)
Define ‘character set’ and compare ASCII and Unicode in terms of character capacity and global applicability.
Character Sets (3 Marks) Read More »
Binary Representation of Characters (2 Marks)
Explain the process of representing characters in binary and discuss why different character sets may use varying numbers of bits.
Binary Representation of Characters (2 Marks) Read More »
Explaining Overflow Errors (2 marks)
Explain what is meant by an overflow error when adding two binary integers. Provide an example with an 8-bit binary addition that results in an overflow.
Explaining Overflow Errors (2 marks) Read More »
Binary Shifts (3 marks)
Perform a left binary shift by 2 places on the binary number 10110011. State the new binary number and explain the effect of this shift on the original number’s value.
Binary Shifts (3 marks) Read More »
Binary to Hexadecimal Conversion (3 marks)
Convert the binary number 11010110 to its hexadecimal equivalent. Show your working.
Binary to Hexadecimal Conversion (3 marks) Read More »
Conversion of Denary to Hexadecimal (3 marks)
Convert the denary number 225 into a 2-digit hexadecimal number. Show your working.
Conversion of Denary to Hexadecimal (3 marks) Read More »
Arabic
Chinese (Simplified)
Dutch
English
French
German
Italian
Portuguese
Russian
Spanish
Ukrainian
Welsh