![]() Associative Access Method: It is a special type of memory that optimizes search performance through defined data to directly access the stored information based on a memory address.In the Sequential method, we have to follow all intervening from A to Z to reach at the particular memory location. For example, to go from A to Z in random access, we can directly jump to any specified location. Random Access Method: It is a method used to randomly access data from memory.Whereas, the data received from random access memory (RAM) can be in any order. Sequential Access Method: The sequential access method is used in a data storage device to read stored data sequentially from the computer memory.DMA: As the name specifies, Direct Memory Address (DMA) is a method that allows input/output (I/O) devices to access or retrieve data directly or from the main memory.Access Methods: Memory can be accessed through four modes of memory.The storage word length can vary in bits, such as 8, 16 or 32 bits. External devices' storage capacity is measured in terms of bytes, whereas the internal memory is measured with bytes or words. Storage capacity can vary in external and internal memory. Capacity: It is the most important feature of computer memory.Whereas, external memory is the separate storage device from the computer, such as disk, tape, USB pen drive. ![]() the example of primary memory are registers, cache and main memory. The internal memory is inbuilt in computer memory.
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