The PCF8591 is a monolithic single supply low power 8-bit CMOS data acquisition device. PCF8591 has four analog inputs, one analog output and a serial I2C bus interface.
The CD4027BM is a single monolithic chip integrated circuit containing two identical complementary-symmetry J-K master-slave flip-flops. Each flip-flop has provisions for individual J, K, Set, Reset, and Clock input signals.
The BD244C, BD-244, 244 is a 6A, 100V 65W PNP Bipolar Power Transistor is designed for use in general purpose amplifier and switching applications. BD243B, BD243C (NPN); BD244B, BD244C (PNP) are complementary devices.