On April 7th 1927, the first long distance television broadcast was made... Information technology isn't just about computers after all...
On April 7th 1964, the modern mainframe, the IBM System 360, was officially announced. There were of course other large computers before the System 360, but the 360 represented the first truly modern mainframe... and more importantly, the modern generation of mainframe system software, and applications.
So much so, that many core mainframe applications running today, are at least in part, binary compatible back to the programs of the S/360 in 1964.
The system 360 pioneered so many things we consider standard today, it can be fairly said that all modern computing is in some way descended from it.
Five years later, April 7th 1969, RFC-1 was published, setting the first basic standards of what would become the internet.
So, happy birthday to the industry that pays my bills.