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what is write-back or copy-back protocolfor a write operation using this protocol during write-hit the method is to update only the cache and to mark
what is write-through protocolfor a write operation using write-through protocol during write-hit the cache location and the major memory location
what are the two ways in which the system using cache can proceed for a write operation write by protocol technique write-back or copy-back protocol
define cache linecache block is used to refer to a set of contiguous address location of some size cache block is also referred to as cache
what are the two aspects of locality of reference define themtwo aspects of locality of reference are temporal aspects and spatial aspect temporal
what is locality of referenceanalysis of program represents that many instructions ion localized areas of the program are implemented repeatedly
define flash memoryit is an approach same to eeprom technology a flash cell is based on a one transistor controlled by trapped charge just like an
what is cache memoryit is a small fast memory that is inserted among large slower main memory and the processor it decreases the memory access
explain flash devicesit is possible to read the contents of a one cell but it is only possible to write an whole block of cellsgreater density which
what are advantages and disadvantages of using eepromthe benefits are that eeprom do not have to be removed for erasure also it is possible to delete
what are disadvantages of epromthe chip must be physically removed from the circuit for reprogramming and its whole contents are erased by the uv
why eprom chips are mounted in packages that have transparent windowsince the erasure needs dissipating the charges trapped in the transistors of
what are the features of promthey are programmed directly by the userfasterless expensivemore flexible
define romit is a non-volatile memory it includes only reading of stored
what are rimmrdram chips can be assembled into larger modules known as rimm it can hold up to 16
what are the special features of direct rdramit is a two channel rambus it has 18 data lines intended to transfer two bytes of data at a time there
what are rdramrdram are rambus dram rambus needs specially designed memory chips these chips use cell arrays based on the standard dram technology
what is ram bus technologythe key feature of ram bus technology is a fast signalling method used to transfer information among chips instead of using
what is memory controllera memory controller is a circuit which is interposed among the processor and the dynamic memory it is used for performing
what are simm and dimmsimm are single in-line memory module dimm is dual in-line memory modules such modules are an assembly of various memory chips
what is mother boardmother board is a main system printed circuit board which having the processor it will occupy an unacceptably large amount of
what is double data rate sdram double data rates sdram are those which can transfer data on both edges of the clock and their bandwidth is
define bandwidthwhen transferring blocks of data it is of interest to know how much time is required to transfer an entire block as blocks can be
what is synchronous dramsynchronous drams are those whose operation is directly synchronized with a clock
what is asynchronous dramin asynchronous dram the timing of the memory device is controlled asynchronously a specialized memory controller circuit