In message <3.0.5.32.19980531195109.007acca0@ieng9.ucsd.edu>, Vincent Chan writes >hi, > I have a weak understanding of circuit design. When I look at those >circuits connected to the pic chip, I know what components are and I know >how to calculate the values of components. But I don't know why they put >together all the components that way. > can anyone recommand any books that I should start reading? > >thanks. bye. The Art of Electronics, by Horowitz and Hill. Leon -- Leon Heller: leon@lfheller.demon.co.uk http://www.lfheller.demon.co.uk Amateur Radio Callsign G1HSM Tel: +44 (0) 118 947 1424 See http://www.lfheller.demon.co.uk/dds.htm for details of my AD9850 DDS system. See " "/diy_dsp.htm for a simple DIY DSP ADSP-2104 system.