Website

http://www.electronics-tutorials.ws/attenuators/attenuator.html
http://www.youtube.com/watch?v=q8JjRFz_Wt4
http://www.youtube.com/watch?v=bJa0oiV6B24
http://www.youtube.com/watch?v=7beZocF34AU
http://www.technologystudent.com/elec1/ldr1.htm
http://www.instructables.com/id/How-to-use-555-timers/
http://megashare.sh/#Cat,TWc9PQ
Pspice download
http://www.electronics-lab.com/downloads/schematic/013/
Signal
http://searchnetworking.techtarget.com/definition/attenuation
sensor
piezoelectric
Arduino buy
http://arduino.cc/en/Main/Buy
online store
http://www.myduino.com/index.php?route=product/category&path=39
http://www.cytron.com.my/listProductGroup.php
http://www.homebrew-tech.com/shop
songs
Angus and Julia Stone - Big Jet Plane
Notes on microprocessor
The PIC is one one 8 bit data type. These range from the most significant D7 to
the least significant bit D0.
MOVLW instruction example
MOVLW K ; move literal value K into WREG
MOV is move; L is literal; W is WREG; literal is we are dealing with an actual v
alue that must be provided right there with the instruction.
ADDLW instruction
ADDLW K ; ADD literal value K to WREG