In this video, i have explained Programmable Peripheral Interface 8255 by following outlines: 0. Programmable Peripheral Interface 8255 1. Basics of Programmable Peripheral Interface 8255 2. Control Signals of Programmable Peripheral Interface 8255 3. Block Diagram of Programmable Peripheral Interface 8255 4. Working of Programmable Peripheral Interface 8255 5. Control Word of Programmable Peripheral Interface 8255 6. Modes of Programmable Peripheral Interface 8255 For free materials of different engineering subjects use my android application named Engineering Funda with following link: https://play.google.com/store/apps/details?id=com.viaviapp.EF Above Android application of Engineering Funda provides following services: 1. Free Materials (GATE exam, Class Notes, Interview questions) 2. Technical Forum 3. Technical discussion 4. Inquiry For more details and inquiry on above topic visit website of Engineering Funda with given link: http://www.engineeringfunda.co.in Engineering Funda channel is all about Engineering and Technology. Here this video is a part of Microprocessor and Interfacing 8085. #ProgrammablePeripheralInterface, #8255, #BlockDiagramofProgrammablePeripheralInterface8255, #WorkingofProgrammablePeripheralInterface8255, #MicroprocessorandInterfacing