Amdmb.com has posted a new article "Memory: From Basics to Buying"

The memory in your computer is called RAM (Random Access Memory) and is a means to store data and instructions temporarily for subsequent use by your system processor(CPU). RAM is random access because information can retrieved from it in any order. Similar to a processor, a memory chip is an integrated circuit (IC) made of millions of transistors and capacitors. Memory can be built right into a motherboard board, but it is more typically attached to the motherboard in the form of a chip or module. Inside these modules are microscopic digital switches which are used to represent binary data. In the most common form of computer memory, Dynamic RAM (DRAM), a transistor and a capacitor are paired to create a memory cell, which represents a single bit of data. The capacitor holds the bit of information -- a 0 or a 1. The transistor acts as a switch that lets the control circuitry on the memory chip read the capacitor or change its state.

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