1. Fundamentals of Computer and programming in C Rohit Khokher

2. Input Output Devices Data From External world Input Devices Input data in internal Format CPU & Memory Processed data in internal Format Output Devices Processed Results in Human Acceptable Form

3. Input Devices Keyboard Point and Draw: Mouse, Trackball, Joystick, Electronic Pen, Touch screen Scanners: Image scanners, Flatbed, Handheld, Optical Character Devices(OCR), Optical Mark Reader (OMR), Barcode Reader, Magnetic Ink Character Reader (MICR) Digitizers Card Readers Voice Recognition Vision based Devices Cameras Sensors Satellites

4. Output Devices Monitors Printers : Dot-matrix, Ink-jet, drum, Chain, laser,… Plotters Projectors Speakers Secondary storage devices