How to Expand Your IBM PC

The IBM PC has five expansion slots and into these go the boards that enable you to add memory and to connect peripherals, such as disks and printers. Special facilities such as networking, mainframe access or voice recognition are also available via the appropriate expansion board plus software support. The IBM XT has eight slots of which three are for short boards and the same consideration for PC expansion apply equally to the XT, except that the latter requires a fixed disk controller board.