Mycobacteria are a type of germ. There are many different kinds. The most common one causes tuberculosis. Another one causes leprosy. Still others cause infections that are called atypical mycobacterial infections.
Released with much fanfare in January of 1984, the Macintosh was the first affordable computer to include a Graphical User Interface. It was built around the new Motorola 68000 chip, which was significantly faster than previous processors, running at 8 MHz.
But by 1980, Apple's shine was starting to wear off. Increased competition combined with less than stellar sales of the Apple III and its follow-up, the LISA, caused the company to lose nearly half its market to IBM. Faced with declining sales, Jobs introduced the Apple Macintosh in 1984.