Comment by Aloha

Many of these are not even close to obsolete:

* The Computer Mouse is an essential part of every day life.

* Radio Receivers are both common and still in daily use by a huge percentage of the planet.

* Electric Lightbulbs still have many specialty applications that cannot be replaced by other forms of technology (same with the neon lamp).

* Morse Code is still used in the radio and aviation world to identify radio transmitters

* Pocket Calculators are still fairly common, particularly in specialized fields, and are still developed and sold new.