Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Q. Interrupt - Driven Input-output?
Problem with programmed I/O is that processor has to wait a long time for I/O interface to see whether a device is free or waits until completion of I/O. Result is that the performance of processor goes down extremely. What is the solution? What about processor going back to do other useful work without waiting for I/O device to finish or get freed up? However how will processor be intimated about completion of I/O or a device is ready for I/O? A well-organized mechanism was considered for this which is referred to as interrupt-driven I/O. In this mechanism provision of interruption of processor work once device has completed I/O or when it's ready for I/O has been provided.
Interrupt-driven I/O mechanism for transferring a block of data is displayed in Figure 5(b). Please note after issuing a read command (for input) CPU goes off to do some other useful work whereas I/O interface proceeds to read data from connected device. On completion of an instruction cycle CPU checks for interrupts (that will happen when data is in data register of I/O interface and it now requires CPU's attention). Now CPU saves important register and processor status of executing program in a stack and requests I/O device to provide its data that is placed on data bus by I/O device. After taking needed action with data CPU can go back to program it was executing before interrupt.
Compute minimum value of the horizontal force: Block A of weight 520N rest on horizontal top of block B having weight of 700N as shown in the figure given below. Block A
How does a hybrid in telephone networks work ? The circuit operation is as follows: The input signal is coupled to the B and F windings similarly. By the C winding, the i
What is .NET / .NET Framework? It is a Framework in which Windows applications might be developed and run. The Microsoft .NET Framework is a platform for building, deploying,
This is a small window that is demanding your attention. You must respond before you can carry on using the program that shown the dialog box. A dialog box does not have a minimize
can i chat with the experts directly
HOW TO SAVE YOUR FILE? Step 1: Click on FILE Step 2: Click on SAVE Step 3: Choose the folder in which you want to save Step 4: Provide a name to the file (with .htm /
Compare the use of switch statement with the use of nested if-else statement. If-else statement: When there are many conditional statements that may all evaluate to true, bu
Is it possible to join ASP.NET webforms and ASP.MVC and make a single web application? Ans) Yes, it is possible to join ASP.NET webforms and ASP.MVC and develop a single web a
What is actor? An actor is a direct external user of a system. Every actor shows objects that behave in a particular way towards systems. Actors are directly linked to system.
what is waterfall model
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd