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Text and numbers can be encoded in a computer as patterns of binary digits. Hexadecimal is a shortcut for representing binary. ASCII and Unicode are important character sets that are used as standard.
What is the point of using hexadecimal instead of binary?
It is easier to use as it summarises four binary numbers in one character
It takes up less memory
It is faster for a CPU to process
What is 10111100 in hex?
What is the hexadecimal value 2D equivalent in denary (base 10)?
How many bytes are used to represent a colour in the 24-bit web colour model?
How many hexadecimal digits are needed to represent an 8-bit binary pattern?
What colour would be represented using the hexadecimal RGB value #DD00CF ?
How would the 4-bit binary pattern 1110 be represented in hexadecimal?
Which of these character sets allows the largest number of different characters?
Which character set can represent English text using the least storage space?
What is the result of the hex sum 4F + A1? What is the equivalent result in binary and denary?
F1, 11110000, 239
F0, 11110000, 240
F3, 11100000, 238