Binary seems like a good fit for OP's conditions.
- Computers. binary code.
- Computers. an executable file stored in binary format.
The use of "binary" in computer science originally meant a stream of instructions entered as base-2 integers, 1 or 0, on or off. Think punch cards: hole or no hole. However, these days one would struggle to find any executable code written strictly in ones and zeros without examining the physical bits on optical or magnetic storage media.
Binary in modern computer science has a connotation of the opposite of plain text. FTP software offers a practical example of this opposition. Binary files are executable or data files largely composed of content that is not human readable. What makes this usage meet OP's guidelines is that binary files are usually examined not as a stream of base-2 integers, but of base-16 hexadecimals (0-9, A-F) in a hex editor. If you attempt to open a picture or video file in a text editor (such as Notepad within Windows), you'll quickly see that binary files consist of more than ones and zeros.
Addendum: In a subtly different context, the label of "binary" is applied to data comprised largely of extended characters (non-alphanumeric, non-punctuation). Consider base64 encoding of binary data. Within this context, coders do not consciously consider the base64 result to be binary, but something converted from binary. Whether the reader agrees that the binary label should be applied only to non-text data is not the point. All I'm saying is, there is precedent. There is prior art. This is happening to the English language heedless of anyone's approval.