Exam-style question
Try this first
A user enters the two-character sequence '27'. Which statement is correct?.
- A.It is one pure binary number containing the value twenty-seven.
- B.It consists of two characters, '2' and '7', each with its own character code.
- C.It must be stored using only two bits.
- D.The character '7' is automatically stored as the pure binary value seven.
Model answer
What a good answer should say
- It consists of two characters, '2' and '7', each with its own character code.
Explanation
Why this works
When entered as text, '27' is a sequence of two digit characters. Each character has a character code.
This is different from storing the numerical value 27 in pure binary.
Common mistake
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