I'll start to count while you solve this problem,
and just relax here at the top of my column.
Everywhere I go I let out a good whistle,
but don't mess with me cause I carry a pistol.
Typically speaking I reach senses of three,
when you count those senses, you may find me.
For if you hold me, I'm likely dead,
why did you take me away from my bed?
Out of the rainbow I cannot see blue,
and my name can be split into two.
The first part of me is a computer's worst dream,
while the second one comes apart at the seam.
Back in the 30's I caused a great craze,
not one single chap did I cease to amaze.
Everyone loved me and wanted a kiss,
but then in the 40's screamed "What did I miss?"
I came with a flash and out like a light,
but I don't really mind because life is so bright.
I've been explosive at one point in history,
what I truly am is not much of a mystery.
Part 4. Good Luck!
Hint... Every line contains at least one hint (except for the last) so if you find something that doesn't fit a line, it may not be right.
Additional Hint... a lot of the hints in the poem reference a part of the word.