1) The document provides installation and setup instructions for the A-826 I/O card. It describes unpacking the components, installing the Windows driver, setting the I/O base address and interrupt level using DIP switches, inserting the card into an ISA slot, adding the hardware in Windows, and testing functionality.
2) Setup involves installing the driver software, configuring the I/O and interrupt settings using DIP switches, inserting the card into the computer, adding it as a device in Windows, and modifying device properties.
3) Functionality can be tested by connecting ports on the card using an optional cable, running sample software, selecting the board number, and verifying digital input and output