Parity checking is often used in computer memory to detect errors. However the e
ID: 3749241 • Letter: P
Question
Parity checking is often used in computer memory to detect errors. However the expense (time, money and space) may not be worth the cost when less efficient and less costly software validation will do.
Investigate some current memory types utilized in systems today
What parity and error-correcting (ECC) memory options are available?
Discuss how is parity checking implemented in the memory module?
How are errors detected and what happens when and error is detected?
Discuss what types of computer systems should use parity and ECC memory and why?
Explanation / Answer
Answer)
Some of the memory type being used are:
ROM, PROM, EPROM, EEPROM, RAM etc
It is the parity bit checker which is to be used for error detection code which is of 2 types: Even and Odd parity check
The types of error correction are as follows: Single Error correction, Checksums, parity check, cryptographic hash functions, Error correcting codes, etc.
Here, in the digital-based communication, the parity check is implemented as a binary stream for ensuring the total number of a 1-valued bit being even or odd.
An error is detected based on the type of error it is, some of the common error detection mechanism is as follows:
checksum, parity, repetitive code, cryptographic hash functions etc.
When an error is detected they are analyzed further and then fixed for a smooth execution of the program.
RAID systems use the parity check as they contain more than one disk that can help to rebuild the data in case the drive fails. Also, large computer systems are used for parity and ECC Checks for smooth communication between modems.
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