The “palm top” computer (get it?) came with a monochrome touchscreen that supported handwriting and was able to syncing knowledge like contacts and calendar entries to users’ computers. It spawned a device category known as the “personal digital assistant,” or PDA. It wasn’t the primary such device—the Apple Newton preceded it—but it was the first one folks wanted and purchased in droves. If you’re in search of a easy way to improve your audio expertise, a DAC might be it.