Learn in the textbookMemory Hierarchy and DRAM Standards & Modules
DefinitionA DIMM is a memory module standard that mounts several DRAM chips on a small board, which plugs into a PC's memory slot to serve as main memory.
ExplanationThe name stands for Dual Inline Memory Module and comes from the pins on the front and back of the board each carrying separate signals. DIMMs are used mainly in desktop PCs and servers, and each DRAM generation has its own dedicated shape.
AnalogyIf DRAM chips are the parts, a DIMM is the cartridge that lines them up so they can be plugged in.
Memory hookDual means "both sides". Its predecessor, the SIMM (Single), had pins on the front and back wired to the same signals.