Thursday, August 12, 2010

Operating System Aug. 12th

New sir, Smily face....Good start. Liked it, seems to be interesting...

Prototype: Set of rules





An incident
============


Sir, drew the above figure with only I/P, O/P, CPU only and asked whats the name of the last unit. My very dear Friend Sumit Nandi said "Sir....Memory", but sir could not listen and after few seconds he again repeated the same but all in vein. And suddenly somebody from the back replied MEMORY...sir heard that crystal clear and applauded. Sumit was devastated and rightly so.

Getting back to the class
==========================


Cache(not Cash)- High speed device, acts as a buffer...I think u know that....

Mr. Rahul asked "Sir why the hell the Storage devices are shown CYLINDRICAL??"

Sir replied.."Convention"

Interrupt
===========


Two types(we said):
-> Maskable
-> Non-Maskable

Sir told,

1. Hardware
2. Timer Based Interrupt
3. Delay
4. Programmable


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