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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 Sequential logic circuit Ans. Sequential logic circuit:- (i) Output not only depends upon the recent state of the input but also depend upon the earlier state
Perform the - 48 - 23 operations using the 2's complement method. Ans. - 48 - 23 = - 48 + (-23) -48 = 1 1 0 1 0 0 0 0 -23 = 1 1 1 0 1 0 0 1 = -71
Q. What is the dissimilarity between dynamic strain aging and strain aging? Answer:- Strain aging could be explains as "normal wear and tear" or the fatigue that is experi
Global variables are accessible only to the batch program while external variables can be referenced from any batch program residing in the similar system library.
What are advantages and drawbacks of latches? Advantages and drawbacks of latches: Area of a latch is classically less than a Flip Flop. It consumes less power, becaus
what is inverse transeformation?
Illustrate the following list of consideration of laptop computers The following is a list for consideration: - The processor must consume as little power as possible thus
Name the various Display devices Different types of display devices are discussed along with the principles on which these work. The main display devices used with CAD systems
deque insertion and deletion ..
Interrupt handling: Handling Interrupts Several situations where the processor should avoid interrupt requests Interrupt-enable Interrupt-disable Typical
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