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.
With LDB one can change the pre-generated selection screen to their needs Yes with LDB one can alter the pre-generated selection screen.
What does the term convergence mean with respect to E-commerce? Convergence with respect to e-commerce The ability to leverage and integrate the several data sources and
What are the Benefits of Web-Based Spreadsheets? The spreadsheets can be accessed from any Internet-connected computer, not just the computer originally formed the spreadsh
For the circuit demonstrated below, what is the Maximum Frequency of Operation? Are there any hold time violations for FF2? When yes, how do you modify the circuit to ignore them?
general computer animation functions
Explain the need for user-defined functions. The need for user-defined function: 1. A programmer might be having a block of code that he has repeated forty times all over t
What is the difference between wire and reg Wire Wire is used for designing combinational logic, as we all know that this type of logic cannot store a value. As you can
1. How does this new generation of ERP products differ from traditional solutions? 2. What are the major external forces driving competition in the ERP industry? Cloud comput
How address resolution is performed with table lookup? Explain with the help of a suitable example. The approach of table lookup to address resolution needs a data structure wh
Internal Organization of memory chip: Word line & bit lines 16x8 organization : 16 words of 8 bits per Form of an array
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