How do I go about analyzing the circuitry of a digital camera? I'm not able to find out what each component does. Also i'm not finding any match for the datasheets of the ICs in the circuit. The camera is D-link DSC-350F
Can someone please give a detailed explanation of the working of this 2 way intercom ? The mic for the top speaker is between the 1M and 33 ohm resistors and the mic for the bottom left speaker is at the node just below the top speaker.