In what charset is 0xE1 an "a" with an umlaut?

Question

I am trying to identify an extended ascii charset where 0xE1 is an "a" with an umlaut (8859-1 character E4) and 0xF5 is a "u" with an umlaut (8859-1 character FC). Has anyone seen this charset before? It quite possibly dates back to the 80's.

Answer 1

To my knowledge, there are no standard ASCII character sets which use those symbols. Here is a list of the standard character sets: http://www.columbia.edu/kermit/csettables.html

However, the character set you referenced is in fact used for interfacing with some LEDs, for example HT1632-compliant LEDs use the same character set: http://blog.thiseldo.co.uk/wp-filez/USB_HT1632_Matrix.pde

I hope this helps.