In this question a magazine is meant to be a periodical publication containing news, information and other content like software for example.
By electronic magazine I mean a magazine presented in electronic form, on a data medium, to be read on a computer.
As an example, I have only one issue of the german electronic magazine "Input64" dated 10/86 on casette-tape for the commodore 64.
This is not a paper magazine that comes with a storage medium for software. It is completely digitally implemented.
This magazine is provided on a data medium like casette-tape or a floppy disk with a booklet explaining the software in detail and summarizing the content.
I think this issue is the first to start appearing on floppy disk:
Searching on the Internet I found that the first appearance of this magazine was in january 1985.
Which was the first electronic magazine distributed on a data medium? When was its first appearance and for which computer?