Posted
June 27, 2013
Today
is NOT Augustus Caesar's birthday AND Augustus DeMorgan's birthday.
What
do you think that means?
Does
it mean:
- it may be either Caesar's birthday or DeMorgan's birthday, but it is definitely not the birthday of both these guys...or
- it is definitely neither guy's birthday...
Well,
according to the rules of logic created by DeMorgan, it means #1.
Augustus Caesar was born in September, and Augustus DeMorgan was born
on this date in 1806. He was born in India to British parents.
Here
are DeMorgan's laws:
NOT
(A AND B) = (NOT
A) OR (NOT B)
NOT
(A OR B) = (NOT
A) AND (NOT B)
This
sort of logic may seem unimportant. You don't use this stuff to
figure out a budget that will allow you to save up for a Settlers of
Catan expansion pack, or to fill out a Girl Scout Cookie form, or to
figure out how much fabric you will need to create capes for the
Justice League of America. But this kind of logic is actually really
important to all of us, every day, because it is used in computers.
Our digital circuits have AND, OR, and NOT “gates” that computer
programmers manipulate as they create new apps and games.
Find
out more about digital logic gates in I Programmer.
Find
out more about AND and OR in Boolean searches here. Check out
this other video if you are curious about NOT (or if you
happen to like pirates, ninjas, and cephalopods).
Also
on this date:
Plan
ahead:
Check
out my Pinterest pages on June
holidays, historical
anniversaries in June,
and June
birthdays.
And
here are my Pinterest pages on July
holidays, historical
anniversaries in July,
and July
birthdays.
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