Who invented the first computer? The first computer was invented by Charles Babbage in 1838. He developed a mechanical calculator that had a simple storage mechanism and called it the Difference Engine. The device used punch cards to input instructions to the device steam engine as its source of power.
There are two basic types of over-the-counter pain relievers: 1  NSAIDs (nonsteroidal anti-inflammatory drugs). 2  These include aspirin, ibuprofen (Advil and Motrin), naproxen sodium (Aleve), and ketoprofen (Orudis KT). 3  Acetaminophen (Tylenol and Panadol).
OTC Pain Reliever Types. Pain relievers come in two main varieties. Acetaminophen (Panadol, Tylenol) and nonsteroidal anti-inflammatory drugs -- better known as NSAIDs -- both help to relieve pain and reduce fever. NSAIDs include ibuprofen (Advil, Motrin), aspirin, and naproxen sodium (Aleve). Pain relievers come in many forms, including: tablets, caplets, gelcaps, and liquids.