Different ARM architecture like v4/v4T(ARM7), Raspberry Pi, Different Xilinx FPGA architecture(7 Series FPGAs,Kintex-7,Zynq-7000), functionality and interface, PLL, DDS, Synthesizer, Internet of Things, logic level translators, Buffer, transceiver etc, PWM, converter, SMPS, buck, boost, Isolated voltage, current sensor, Temperature sensor, PIR sensor, Battery Bank charger, Snubber design, RF filter design, RF components selection, RF frequencies selection, Grounding isolation, EMI & EMC etc, pH, ORP, Conductivity measurement, AV TX & RX Modules, IR transmitter & Receiver, PTZ camera, TFT Display, DVR, Sonar, SICK, Motor, Gear Box, Motor Driver etc.