Password protection

[UDIPTA]

I am writing a program which needs to be password protected. I am
using pic16f876a mcu. Can you give some idea how I can enter a
password using a single switch and how the password can be checked?
I can use an lcd for display.
Please help

[pau]

With only a single switch you need to do a sequence. Once you power-up the pic, the program have to wait until the switch is turned on, then the password can be like this:

2 seconds on-1 second off-2 seconds on.

It needs to have a range, for instance +/- 0.3 seconds for each interval.

Hope it helps you.

[SherpaDoug]

If you want to get real sophisticated you could use Morse code.
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The search for better is endless. Instead simply find very good and get the job done.

[Guest]

SherpaDoug,

--. .-. . .- - .. -.. . .-!!

Simon