A debugger is just application or a plan made to debug the problems or problems inside a plan while examining the code structure and it removes all the errors and mistakes and it to enhance the effectiveness of that program.
A “trap” occurs when the program cannot normally continue because of a programming bug or invalid data. For example, the program might have tried to use an instruction not available on the current version of the CPU or attempted to access unavailable or protected memory.
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The hard disk was invented on September 13, 1956 by IBM team led by Rey Johnson (considered as “father” of the disk drive). Earlier hard disk drives were large and cumbersome devices.