In SX Microcontrollers, SX/B Compiler and SX-Key Tool, Chuckz wrote:

I think the SX chip is important and I'll tell you why.

I dropped my keys at work and when I noticed it, the inside of my car remote was missing.  The case was still attached to my keys but because the case was previously opened to change the battery, it was easy for the board inside it to come out.

What is inside is a board about half an inch by an inch.  It has a 3 volt coin battery holder, four tact switches on one side and a chip probably no bigger than the SX and it may be an SX.  There is one more chip or part that I can't identify.

The point is this, I was upset because I didn't want someone else to be walking around the parking lot at work looking for my car and when I found my remote, I was happy because it would cost probably $100 for a new remote but I'm paying for someone's knowledge.

What you learn is very useful and though you learn something that may be discontinued, the knowledge can be invaluable and these small parts can be very valuable in your next project.

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