Why is such an "old" bus still in use after all these years? This bus is reliable, compatible, and affordable. Finally, it is still faster than many of the peripheral devices we currently connect to it.

The 8-bit version of ISA is not included in current systems. However, you can take an old 8-bit card that is designed for the 8-bit bus and use it in almost any 8088-486 PC. Although providing only "one lane" for data transfer, this bus is efficient and effective.

The 16-bit bus doubled the capacity of the 8-bit bus. This "two-lane" bus is a vast improvement over its predecessor, and opened the door for faster data transfer.