How essential is ASCII to the A+

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Apart from the knowledge of what it is, and how it works? The 127 characters, 1 byte - or do you need to have a smattering of the code itself?

Just so I can remember to revise my table

 

Thanks Boyce. My course notes and book didn't go too indepth - the binary was given more focus. Perhaps I just need to be aware of what it is then. Ta!!