Input and output devices

"INPUT AND OUTPUT DEVICES" Input-output unit—Input unit, output unit Input devices—Human data entry devices, source data entry devices Human data entry devices Keyboard Pointing devices—Mouse, trackball, joystick, digitizing tablet Pick devices—Light pen, touch screen Source data entry devices Audio input device (microphone, sound card, speech recognition) Video input device (video camera, digital camera) Optical input devices—Scanner (hand held, flat bed), OCR, MICR, OMR, barcode reader Output devices—Hard copy devices, soft copy devices Hard copy devices Printer—Impact printers (dot matrix, daisy wheel, drum), non-impact printers (ink-jet, laser) Plotter—Drum plotter, flatbed plotter Computer output on microfilm (microfiche) Soft copy devices—Monitor, visual display terminal, video output, audio response (speakers, headphone) I/O port—Parallel port, serial port, USB port, firewire port Working of I/O system—I/O devices, device controller, device driver