1aEasy1 mark
Which hexadecimal digit represents binary 1011?
Number Systems Assessment
7 questions · 12 parts · 15 marks
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2aMedium1 mark
Convert denary 45 to 8-bit binary.
Answer
2bHard3 marks
Create a clear annotated answer on the canvas. Use a diagram, graph, flowchart, equation layout and/or concise labels to show your reasoning.
An 8-bit register contains 11110000. Describe the result and limitation of shifting it left by one place.
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3aEasy1 mark
Why do computers use binary?
3bEasy1 mark
Why is hexadecimal useful?
4aEasy1 mark
What is overflow in 8-bit addition?
5aEasy1 mark
What does a logical left shift do?
5bEasy1 mark
How does two’s complement represent a negative value?
6aMedium1 mark
Use the lesson knowledge to answer precisely: Why do computers use binary?
6bMedium1 mark
Use the lesson knowledge to answer precisely: Why is hexadecimal useful?
7aMedium1 mark
Why is two's complement used in practice instead of sign-and-magnitude to represent negative integers?
7bHard2 marks
Use the table to record your response.
An 8-bit two's complement register holds 11101000 (denary -24). Perform an arithmetic shift right by 1 place, then give the new denary value.
| Prompt | Response |
|---|---|
| 8-bit result after the shift | |
| Denary value of the result |