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[[File:Intel_82PM45_Memory_Controller_Hub_-_MCH_AC82PM45-SLB97_-3718.jpg | thumb | right | Intel 82PM45 Memory Controller Hub]]
A '''memory controller''', also known as '''memory chip controller''' ('''MCC''') or a '''memory controller unit''' ('''MCU'''), is a digital circuit that manages the flow of data going to and from a computer's [[main memory]].<ref>Comptia A+ Certification Exam Guide, Seventh Edition, by Mike Meyers, in the glossary, bottom of page 1278: "Chip that handles memory requests from the CPU."</ref><ref>{{cite book |last1=Neat |first1=Adam G. |url=https://books.google.com/books?id=PJ49xcoRb1QC&q=%22memory+controller+unit%22&pg=PA100 |title=Maximizing Performance and Scalability with IBM WebSphere |date=2003-12-04 |publisher=Apress |isbn=9781590591307 |access-date=6 February 2015}}</ref> When a memory controller is integrated into another chip, such as an integral part of a [[microprocessor]], it is usually called an '''integrated memory controller''' ('''IMC''').
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