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Q. Write Policy of cache memory?
If contents of a block in cache are changed then it's essential to write it back to main memory before replacing it. Write policy determines when altered words of a block are written back to main memory. At one extreme an updated word of a block is written to main memory as soon as such updates take place in block. At other extreme all updated words of block are written to main memory only when block is replaced from cache. Latter policy minimises overheads of memory write operations however temporarily leaves main memory in an inconsistent (obsolete) state.
Q. Explain about Karnaugh Maps? Karnaugh maps are a suitable way of expressing and simplifying Boolean function of 2 to 6 variables. The stepwise process for Karnaugh map is.
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Q. What about division and multiply operations? In most of the older computers divisions and multiply were implemented using subtract/add and shift micro-operations. If a digit
what are the Database designs to avoid?
Draw the logic diagram of 16-bit ROM Array and explain its principle of operation. Ans: 16-bit ROM Array: A ROM that is read-only memory is an array of selectively closed
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