computer hardware, consumer electronics, electronic components  

Random access memory (RAM)

Data processing systems such as personal computers, digital video players, and wireless communications devices often include multiple data processing clients which share access to random access memory (RAM). A typical RAM includes memory array and peripheral circuits. The memory array is typically arranged in rows and columns of memory cells. Each row of the memory cells can be accessed by activating a word line. Each column of the memory cells can be accessed by addressing a bit line. The bit lines are typically provided in pairs of complementary bit lines. Random access memories (RAMs) typically include a plurality of memory cells arranged in an array of rows and columns. Data are accessed from the memory cells by selecting a given cell or cells by activating bit lines and word lines according to a row and column address. A typical random access memory system for a computer includes an array with one or more columns of RAM cells configured to store respective logic states. Data is written to and/or read from each of the RAM cells in each column via differential complimentary bit and nbit connections. An address word line, decoded from a computer address sent by a central processing unit (CPU) or other processor, is communicated to the RAM cells. Typical randomly accessible memory devices include an SRAM (static random access memory) and a DRAM (dynamic random access memory), which are volatile memories.


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