Intel 4000-series support chip

generate a one-sentence description for a given conceptual class.
# Response Format
Return only the sentence: "Description: [one-sentence description of the conceptional class]"

Class: Intel 4000-series support chip

An Intel 4000-series support chip is an auxiliary integrated circuit designed to work with Intel microprocessors of its era, providing functions such as memory control, I/O handling, timing, or bus interfacing to complete a microcomputer system.