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.
Q. What you mean by organizational effectiveness? Organizational effectiveness is measured in terms of productivity, structural flexibility, Employee involvement and Job satisf
Develop a regular expression for Integer and Identifier (i) A regular expression for integer is [+ | -] (d)+ (ii) A regular expression for identifier is l(l | d)*
Define CPU scheduling. CPU scheduling is the method of switching the CPU among various processes. CPU scheduling is the basis of multiprogrammed operating systems. By switching
What do you mean by E-cash? E-Cash and its Properties: Ecash is cash which is represented by two models. One is the on-line form of e-cash which allows for the completi
Q. Describe about Frameset? Now make a master page in which you write below code. My Frame Page -- The Master Page
Give the regular expression of the set of all even strings over the alphabet {a, b} along with at least one of the two substrings aa or bb. As well construct the finite automata wh
How to pass data from list to report? ABAP/4 gives three ways of passing data: ---Passing data automatically using system fields ---Using statements in the program to tak
As an advocate of CISC architecture to RISC architecture, what are the merits and demerits of CISC to RISC architecture
Assessing Heuristic Searches Given a specific problem you want to create an agent to solve, there can be more than one way of specifying it as a search problem, more than one o
How can we access the correction and transport system? Each time you make a new object or change an existing object in the ABAP/4 Dictionary, you branch automatically to the W
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