Binary, denary and hexadecimal patterns represent numbers.
Complete the table with the result of applying the shift to the binary pattern.
| Binary pattern | Shift | 8-bit binary result |
|---|---|---|
| 1010 1100 | Arithmetic shift right by 1 |
Mark scheme
Award one mark for each correct nibble in the correct order:
- 1101 (1)
- 0110 (1)
0 marks if the response is not 8-bit binary.
Example answers and how they were marked
Full marks2/2
1101 0110
Why: Every bit moves 1 place right, with copies of the sign bit (1) in from the left: both nibbles are correct (2).
Some marks1/2
0101 0110
Why: Fills the gap on the left with 0s, as a logical shift would, instead of copying the sign bit. The second nibble is correct (1); the first is not.
No marks0/2
0101 1000
Why: Shifts the bits the wrong way. Neither nibble is correct.