Computer systems manipulate bit patterns.
Convert the binary pattern 1000 1010 to hexadecimal.
Mark scheme
Award one mark for each correct digit in the correct position:
- 8 (1)
- A (1)
Answer: 8A
Example answers and how they were marked
Full marks2/2
8A
Why: Each nibble is one hexadecimal digit: 1000 = 8, 1010 = A: both digits are correct (2).
Some marks1/2
810
Why: One digit is correct (1), but a digit over 9 is written in denary instead of as a letter.
No marks0/2
A8
Why: The digits are the wrong way round, so neither is in the correct position.