ASCII vs EBCDIC: these character encodings primarily differ in their collating sequences (ordering of characters) rather than storage size.

Introduction / Context:ASCII and EBCDIC are legacy character encodings used to represent letters, digits, and symbols on computers. Understanding how they differ matters for sorting behavior, interoperability, and porting software between systems (e.g., mainframes vs microcomputers).

Given Data / Assumptions:

• ASCII: 7-bit code commonly stored in 8-bit bytes.
• EBCDIC: 8-bit code used predominantly on IBM mainframes.
• Question focuses on what they differ in most fundamentally.

Concept / Approach:

• Collating sequence is the order assigned to characters for comparison and sorting.
• ASCII and EBCDIC place letters, digits, and punctuation in different relative orders.
• Both are typically stored in single bytes on most systems, so storage size is not the core difference in practice.

Step-by-Step Explanation:

Verification / Alternative check:

Why Other Options Are Wrong:

• Efficiency in storing data: Both are byte-oriented in practice; difference is not fundamental here.
• Random/sequential access method: This pertains to storage/media, not character encoding.
• Number of bytes used: Typically one byte each; ASCII is 7-bit but stored in a byte.
• None of the above: Incorrect because collating sequence differences are well-known.

Common Pitfalls:

• Assuming ASCII always uses fewer bytes; on most systems it still occupies one byte.
• Confusing encoding with file I/O access methods.

Final Answer: