Morse Code Reader

I was really brought back in time after reading the following post.  When I was a in junior high, I was I guess what you call a "early adopter" to being geek.  I got my HAM radio license and purchased a Heath Kit SB100 radio (Vacuum tubes and all).  I learned Morse code to get my license but was happy when I could interpret Morse Code at 13 words per minute and got my general class license and could actually use a microphone to talk to other folks.  In the mean time, I read an article in a Popular Electronics magazine that talked about how to build a circuit to digitize the tones from the speaker "playing" the code (using a Schmidt trigger if I remember right).  I was on my second computer after saving up enough to get a VIC-20 (after my Timex Sinclair) so I built a little chunk of code to convert the tones to actual characters on the display, this worked well!  The other chunk of functionality I needed was the ability to key the transmitter to send out code, I think I used a bit on the joystick port to drive a relay and I was set.  This brings me back to the original post from Ashish Derhgawen, he wrote an output from a parallel port on his PC to drive an LED (I didn't see the current limiting resister in his screen shot, but maybe this is one of those new fangled LEDS with it built in).  He had a challenge on the bottom of hist post to identify what the message he was sending, I had a difficult time reading the Morse code from the LED, so I had to write a little program to read the LED and turn it into dots and dashes I could easily read...I'm not going to give away the answer to his challenge, but if you know Morse code it should be obvious.  I wouldn't call this a very robust solution, but sometimes coding is just fun.

Anyway here is a screen capture of the simple program...

The SWF file just gets loaded up into an IE component on the form, then here's the snippet that reads the LED, the rest is a simple state machine...

-ec