Peripheral and Interfacing

What you’ll study

Interfacing: peripheral devices, adapters, the data highway, I/O operations; interrupts — basics, types and priority — and interrupt controllers (daisy-chain configuration, the 8259A); DMA basics and the 8237 DMA controller; buses — AGP, PCI and PCI Express, USB, SCSI. Digital interfacing: the basics of digital interfacing and the programmable parallel port 8255A, keyboard and alphanumeric display interfacing, interfacing microcomputer ports to stepper motors and high-power devices, optical motor-shaft encoders. Analog interfacing: D/A converters (simple and R-2R ladder) and A/D converters (parallel, successive-approximation and dual-slope), their properties and interfacing with sensors. Peripheral devices: sensors and transducers; interfacing with mouse, joystick, scanner, light pen, touch screen, OMR, OCR and barcode readers; magnetic and optical disk storage; keyboard switches, LEDs, CRT and LCD displays, laser printers.