There is a wealth of free engineering information and there are many free design tools available on the internet. Some of our favorite links are provided below: C,C++ Reference eBook: The Scientist & Engineer's Guide to Digital Signal Processing - Steven Smith EDN's Annual Microprocessor Directory EDN's Annual DSP Directory Free Filter Design Software GPG (OpenPGP Email Security) Flash Drive Encryption Front Panel Designer Op Amps, Spice Circuit Models, Free Spice SW Links Free technical e-books, text books Cornell University archive of papers Virtual Network Computing FPGA cores Identify tasks running in Windows task manager Surface Mount Component Markings Battery Information Fax using your phone Verilog delay modeling paper QBasic is back, its free,compatible, 64 bit fast SMath Studio, a math paper like interface program Scilab, a scientific software package for numerical computations Gimp, the GNU Image Manipulation Program Resist.exe, program calculates optimum resistor values for dividers, amplifiers, etc.