FPAA is a chip with op amp, keys and capacitors arranged into analog functional elements. You can download graphical IDE from Anadigm site and design your circuit by drawing schematic with functional elements from library, simulate and debug your design. Then you program memory and Anadigm chips become working. You can reprogram memory, if you want to change circuit. If you need huge number of similar working chips, Anadigm can produce them in the FreezeFrame Program.