The only time I have seen a .bin file is when working with CD image files. Usually there are a pair of files one is a .bin and the other is a .cue file. Usually the CD creation software looks at the .cue file which tells the program where to find the .bin file. The .bin file contains all the data, and as Allan said it's in binary.
I haven't seen any .bin files in a while. Most images that I see on the net anymore are .iso, .nrg, or, .ccd.
in my opinion it is one of 2 types of files, eather a binary programing file that will controle hardware, or in a part of the internet that we are not allowd to talk about here, it is a cd/dvd image file, may come with a .cue fle too
Ep, glad to see you come back and tidy up...did want to ask a one day favor, I want to enhance my resume , was hoping you could make me administrator for a day, if so, take me right off since I won't be here to do anything, and don't know the slightest about the board, but it would be nice putting "served administrator osnn", if can do, THANKS