Count Storage under a Stated Encoding
Multiply the supplied character count by the stated bytes per character.
About 18 minutes, plus any extended practice
Supplied materials
- Paper and pencil; answers may also be spoken or typed.
- All cases, labels, numbers and rules are supplied on this page. No real account, private information or purchase is needed.
Learn the idea
Different encodings may use different storage amounts for the same text. Our simplified exercise assigns a constant bytes-per-character value; real Unicode encodings can use variable amounts. Count characters and bytes under the stated rule rather than claiming every character has a universal size.
Multiply the supplied character count by the stated bytes per character. Character count and byte count need not be equal.
Use this supplied case: Classroom encoding stores 5 characters at exactly 2 bytes each. Storage excluding all overhead? The task is to connect the given information to the computing idea. Write a short evidence trail so another learner can reproduce your choice. The simplified case describes the stated model, not every real system.
- Represent the supplied worked case with a labeled drawing, table or short trace.
- Multiply the supplied character count by the stated bytes per character.
- Explain why the worked answer fits and why one alternative does not.
- Try the new check and practice cases; revisit the stated rule if your evidence does not match.
See the method in action
Classroom encoding stores 5 characters at exactly 2 bytes each. Storage excluding all overhead? The supported answer is 10 bytes. Applying the stated rule gives 10 bytes. Multiply the supplied character count by the stated bytes per character. Character count and byte count need not be equal. Different encodings may use different storage amounts for the same text. Calculation: (5*2) = 10.
Check your reasoning
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Helpful tips
- Multiply the supplied character count by the stated bytes per character.
- Character count and byte count need not be equal.
See the answer and explanation
18 bytes
Using the supplied inputs: (6*3) = 18. Multiply the supplied character count by the stated bytes per character. Character count and byte count need not be equal.
Take it further
New model:11 characters at 2 bytes each gives 22 bytes. If the model changes to 4 bytes each, it gives 44; neither is a universal Unicode size.
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More practice: try new cases
Choose an answer for each problem. Explain your method on paper, then use the feedback to decide what to revisit.
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