The DS1307 is a low power Full Binary (BCD) Real Time Clock (RTC) IC with 56 bytes of SVRAM that communicates through I2C Protocol. The IC can work from directly supply on Vcc and switch to Battery automatically when required.
LM565 is a general purpose PLL (Phase Locked Loop) IC designed for demodulation, frequency multiplication and frequency division. The device mainly consists of two components, one is voltage controller oscillator and other is phase detector.
TDA7265 is a 25 Watt + 25 Watt stereo audio amplifier IC. The chip is a class AB dual audio power amplifier in Multiwatt package specifically designed for high quality sound application as music centers and stereo TV sets.
TDA2005 is a 20 Watt audio amplifier IC, a class B dual audio power amplifier in Multiwatt11 package specifically designed for car radio applications. Because of high current capability (up to 3.5Amp) the chip can be used to design Power booster amplifiers easily.