Computer systems manipulate bit patterns.
Convert the binary pattern 1110 1111 to hexadecimal.
Mark scheme
Award one mark for each correct digit in the correct position:
- E (1)
- F (1)
Answer: EF
Example answers and how they were marked
Full marks2/2
EF
Why: Each nibble is one hexadecimal digit: 1110 = E, 1111 = F: both digits are correct (2).
Some marks1/2
E15
Why: One digit is correct (1), but the second is written as 15 in denary instead of F.
No marks0/2
FE
Why: The digits are the wrong way round, so neither is in the correct position.