This kind of question generally has many opinions. As for the E of DELL,

Some people say that it was because the founder Michael Dell’s handwriting was very ugly and he casually wrote an unsightly brand name, so he made the mistake and changed the trademark according to the bad handwriting. The design was like this, but it turned out that it was harmonious with honey XD

It is also said that E is the first letter of ear, and when it is twisted, it means "listen attentively". . .