The Letter Arrangement On Your Keyboard
The origins of the non-alphabetized computer keyboards can actually be traced back to the first keyboard invented. It was part of the typewriter, which had metal arms. The keys were originally arranged in alphabetical order, so typists developed the habit of typing that way. They ended up typing really fast, which caused key arms getting stuck! Nowadays, everyone is so used to the non-alphabetized keyboards that no one has actually attempted to go back to the alphabetized ones.
The Letter Arrangement On Your Keyboard
Ridges In Audio Jack
Aside from keeping the audio jack from falling out of the port, the ridges in the jack are made up of material that is used to protect the wires. The ridges also prevent breaking of the music while you are listening to it. The ridges dictate where the music goes to. This means one band is for both headphones, one for the left, and one for the right.
Ridges In Audio Jack