This document provides details about connecting an 8086 microprocessor system with external memory and I/O devices. It includes the pin configurations of the 8086 CPU in minimum and maximum mode. It also shows the truth table and functionality of the 8288 bus controller chip. Block diagrams are provided for an 8086 system with 8 push buttons and 8 LEDs, and then expanded to 32 push buttons and 32 LEDs with address mapping. A program is also described to read the switch states and output them to the LEDs.