TYPES OF MEMORY RAM.docx - TYPES OF MEMORY(RAM Static RAM(SRAM Time in Market 1990s to present Popular Products Using SRAM Digital cameras routers

TYPES OF MEMORY RAM.docx - TYPES OF MEMORY(RAM Static...

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TYPES OF MEMORY (RAM) Static RAM (SRAM) Time in Market: 1990s to present Popular Products Using SRAM: Digital cameras, routers, printers, LCD screens One of the two basic memory types (the other being DRAM), SRAM requires a constant power flow in order to function. Because of the continuous power, SRAM doesn’t need to be ‘refreshed’ to remember the data being stored. This is why SRAM is called ‘static’ – no change or action (e.g. refreshing) is needed to keep data intact. However, SRAM is a volatile memory, which means that all the data that had been stored becomes lost once the power is cut off. The advantages of using SRAM (vs. DRAM) are lower power consumption and faster access speeds. The disadvantages of using SRAM (vs. DRAM) are lesser memory capacities and higher costs of manufacturing. Because of these characteristics, SRAM is typically used in: CPU cache (e.g. L1, L2, L3) Hard drive buffer/cache Digital-to-analog converters (DACs) on video cards Dynamic RAM (DRAM) Time in Market: 1970s to mid-1990s Popular Products Using DRAM: Video game consoles, networking hardware One of the two basic memory types (the other being SRAM), DRAM requires a periodic ‘refresh’ of power in order to function. The capacitors that store data in DRAM gradually discharge energy; no energy means the data becomes lost. This is why DRAM is called ‘dynamic’ — constant change or action (e.g. refreshing) is needed to keep data intact. DRAM is also a volatile memory, which means that all the stored data becomes lost once the power is cut off. The advantages of using DRAM (vs. SRAM) are lower costs of manufacturing and greater memory capacities. The disadvantages of using DRAM (vs. SRAM) are slower access speeds and higher power consumption. Because of
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  • Fall '18
  • gene Alvarez
  • DIMM, DDR SDRAM, DDR3 SDRAM, DDR2 SDRAM, development of SDRAM

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