"this is a I/O Box" vs "this is an I/O Box"

Question

"this is a I/O Box" vs "this is an I/O Box"

Both phrases are similar, but the correct one is "this is an I/O box." The use of the indefinite article "an" before the acronym "I/O" is the correct way to indicate the pronunciation of the acronym. It is a common practice in English to use "an" before acronyms that start with a vowel sound.

Last Updated: March 30, 2024

Alternatives:

this is an I/O box
this is an input/output box
this is an input and output box
this is a box for input/output operations
this is a box for both input and output

Use this phrase when referring to a box that is related to input/output operations and pronounce the acronym "I/O" as individual letters.

Answer 1

this is a I/O Box

This phrase is incorrect. The indefinite article "a" should not be used before the acronym "I/O" because it starts with a vowel sound.

Answer 2

this is an I/O Box

This phrase is correct. The use of the indefinite article "an" before the acronym "I/O" is the correct way to indicate the pronunciation of the acronym.

"this is a I/O Box" vs "this is an I/O Box"

this is a I/O Box

this is an I/O Box

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