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Static random-access memory (static RAM or SRAM) is a type of random-access memory (RAM) that uses latching circuitry (flip-flop) to store each bit. SRAM is volatile memory; data is lost when power is removed. The static qualifier differentiates SRAM from dynamic random-access memory (DRAM):
It must also be constructed from static RAM, which is far more expensive than the dynamic RAM used for larger memories. Static RAM also consumes far more power. CPU speed improvements slowed significantly partly due to major physical barriers and partly because current CPU designs have already hit the memory wall in some sense.
Quad Data Rate (QDR) SRAM is a type of static RAM computer memory that can transfer up to four words of data in each clock cycle. Like Double Data-Rate (DDR) SDRAM, QDR SRAM transfers data on both rising and falling edges of the clock signal. The main purpose of this capability is to enable reads and writes to occur at high clock frequencies ...
Dynamic random-access memory (dynamic RAM or DRAM) is a type of random-access semiconductor memory that stores each bit of data in a memory cell, usually consisting of a tiny capacitor and a transistor, both typically based on metal–oxide–semiconductor (MOS) technology. While most DRAM memory cell designs use a capacitor and transistor ...
With the advent of integrated circuits in the 1960s, both ROM and its mutable counterpart static RAM were implemented as arrays of transistors in silicon chips; however, a ROM memory cell could be implemented using fewer transistors than an SRAM memory cell, since the latter needs a latch (comprising 5-20 transistors) to retain its contents ...
Static random-access memory, a type of semiconductor memory that uses bistable latching circuitry to store each bit Shadow Random Access Memory , for faster ROM chip access Short-range attack missile
nvSRAM is one of the advanced NVRAM technologies that are fast replacing the battery-backed static random-access memory (BBSRAM), especially for applications that need battery-free solutions and long-term retention at SRAM speeds. nvSRAMs are used in a wide range of situations: networking, aerospace, and medical, among many others [3] where the ...
(The module provides pins for 11 lines, but many motherboards and modules provided only 8.) Some variants (illustrated to the right) placed the tag RAM on the motherboard and only the main cache RAM was on the module. Consider the 256K module first. An 8-bit tag allows caching memory up to 256 times the cache size, or 64 MiB.