Google shows about 74,000 "hits" for LPC2400
Some have code examples. No one here will write your code for you or design the board.
You must do the work, and if you have problems you can ask for help here.
If you want to do a board layout, I recommend "Eagle." It may be found under "Software and Tools."
Many people here are fond of "Proteus," which can also be found under "Software and Tools."
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I was messing around and looked for the "LPC2478" data sheet. This micro is really "high end" and runs Windows CE.
It's a Ball Grid footprint, so you won't be soldering that up on your bench. You can look at Phytec - they make an evaluation
board for this processor. The website
http://ics.nxp.com/products/lpc2000/lpc24xx/gives much documentation, example code, implementation tips and a link for the evaluation board. Good luck!
