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The first Semiconductor was made
Semiconductors are a key part of PC's -
The first Mainframe PC was made
The PC weighs 5 tons (More than 3 times an average car weight) It cost nearly £2400000 in today's money to build -
The first Mouse based operating system was made
It was actually made by a printer company -
MOS-DOS was released
MOS-DOS was the base for many old windows versions -
Windows was released
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Windows CE was made (for portable PC's)
This was the predecessor of the smartphone, a PC that could fit in your pocket. The first versions of these could be powered by AA batteries.