Motherboards weren't discovered, they were a constructed advent of man.
Technically, motherboards existed at the time of the first computer. A motherboard is, by definition, little more than a board that interconnects different computer components, typically to the CPU. The designation 'Mother' 'Main' and 'Primary' are used in combination with 'board' to denote that it is the centralmost logic board in the computer, and has ties with the CPU. Computers may contain more than one equivalent board, both of which with their own CPU, which could be considered a 'motherboard'.
Motherboards may perform little or no function beyond providing circuit connections, or may also contain it's own internalized logic structure and microprocessors (common in desktop computers).
It was IMB
yttrium was discovered in the year 1794.
mickey mouse year:1995
In the year 1902. Dr. Still discovered ADHD.
it was discovered 1347
This can vary from year to year and month to month but ASUS brand motherboards are usually at the top
ATOMIC NUMBER YEAR IN WHICH IT WAS DISCOVERED? it was discovered in 1913 by British physicist Henry Mosely
argon was discovered by Dr.william Ramsay of Scotland in the year 1894.
sulfur was discovered in 1777
discovered in 1842
this has been discovered in the year of 1941
1825 aluminum was discovered.