Alphanumeric

Back when 1 MB was considered massive storage, developers had to get creative with their character choices. Alphanumeric passwords? More like "alpha-NO-numeric" because you literally couldn't afford the extra bytes. Every character mattered when your entire codebase had to fit on a floppy disk that held less data than a single smartphone photo today. Those were the days when optimization wasn't a best practice—it was survival. You'd compress, truncate, and abbreviate everything just to squeeze your program into existence. Modern devs complaining about a 500 MB node_modules folder would've had an aneurysm in the 90s.