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Error handling in Hard disk in computer architecture:
Modern drives also make widespread use of Error Correcting Codes (ECCs), specifically Reed-Solomon error correction. These techniques store additional bits for each block of data that are resolute by mathematical formulas. The extra bits permit many errors to be fixed. Whereas these additional bits occupy space on the hard drive, they permit higher recording densities to be employed, resulting in much higher storage capacity for user data. In the year 2009, in the newest drives, low-density parity-check codes (LDPC) are supplanting Reed-Solomon. LDPC codes are able performance near to the Shannon Limit and therefore allow for the highest storage density available.
Typical hard drives effort to "remap" the data in a physical sector that will be bad to a spare physical sector-hopefully whilst the number of errors in that bad sector is still little enough that the E CC can fully recover the data without loss.
Explain macro definition. A unit of specification for a program generation is termed as a macro. This consists of name, body of code and set of formal parameters.
Explain 100 line exchange with two-motion line finders. Design: In such design, here are 24 line finders. When any of the 100 subscribers has to find access to any of the 24
Storing a word in Memory: That is similar process with fetching a word from memory. The required address is loaded into the MAR After that data to be written are lo
What is a heap? The heap is an area of memory that is dynamically allocated. As a stack, this may grow and shrink throughout runtime. Not like a stack, a heap is not LIFO show
Q. Find the complement of following functions and reduce to minimum literals 1. (A+C+D) (A+C+D') (A+C'+D)(A+D') 2. ABC(ABC' + AB'C + A'BC) 3. AB + AB' + A'C +A'C'
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Data Stream and Instruction Stream The term 'stream' refers to an order or flow of either data operated or instructions on by the computer. In the complete chain of instructi
A Master group consists of? A master group have 300 voice channels.
Q. Explain about data registers? The data registers are used just for storing intermediate results or data and not for operand address calculation. Some dedicated address re
SS7 Protocol uses: (A) Out of band signalling. (B) Associated signalling. (C) Speech control signalling. (D) No signalling. Ans: SS7 Protocol uses Out of
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