ISA Embedded Systems@ (257) ISA Standard@ (9) PC Interfacing Tutorials - Complete tutorials on PC interfacing including schematics, photos highlighting construction tips, PCB artwork and source code for programming. Learn how to interface DC and stepper motors, ADC/DAC, keypads, LCDs, and relays. ISA Bus Technical Summary - The Industry Standard Architecture information. ISA Technical - Designed to give a basic overview of the bus found in most IBM clone computers, often referred to as the XT or AT bus. PC Tech The Expansion Bus - This vital but unheralded component has been around about as long as the PC itself. Take a look at what makes it tick, from PC Magazine. ISA