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word organized memory

Memories differ in terms of the form of organization into word-organized memories and block-organized memories. Word-organized memories can have random access

, but also quasi-random, direct or implicit access. With random access, as with RAMs or ROMs, the access time to the memory elements

that canbe addressed in groups is always the same, which is related to the hard-wired addressing mechanism. Random access can also be content addressed as in associative memory

Quasi-random access

is one that is time addressed. In this access method, memory locations can be accessed in any order. Thus, the access times are variable. An example of memory with quasi-selective access isbubble memory

Direct access

is usedfor registers, the smallest memories that make information directly available to the central processing unit. Since they usually store only one data word, no selection and addressing

ispossible.

Implicit access is when the information is only available at an implicitly specified memory location.

FIFO memories and stack memories belong to this memory group.

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Englisch: word organized memory
Updated at: 03.01.2012
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