Static random-access memory
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Static random-access memory is a type of random-access memory that uses latching circuitry to store each bit. SRAM is volatile memory; data is lost when power is removed.
A static RAM chip from a Nintendo Entertainment System clone (2K × 8 bits)
Imaged by scanning electron microscope; cell topology is clearly visible
Imaged by optical microscope
Random-access memory
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Random-access memory is a form of electronic computer memory that can be read and changed in any order, typically used to store working data and machine code. A random-access memory device allows data
Static random-access memory
…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…
Example of writable volatile random-access memory: Synchronous dynamic RAM modules, primarily used as main memory in personal computers, workstations, and servers.
A 64 bit memory chip die, the SP95 Phase 2 buffer memory produced at IBM mid-1960s, versus memory core iron rings
8GB DDR3 RAM stick with a white heatsink
These IBM tabulating machines from the mid-1930s used mechanical counters to store information.