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.
Explain the Trackball and Thumbwheel devices Joysticks A joystick consists of a small, vertical lever (called the stick) mounted on a base that is used to steer the screen
Data phases: After the address phase (particularly, starting with the cycle that DEVSEL# goes low) comes a burst of one or more data phases. In all the cases, initiator drives
Define various system? Single job system: Only one program may be run at a time, and therefore only one person might be work on a machine at one time. Multi job system:
The Task Gantt shows the various tasks being performed i.e., some type of activities by the set of processors attached to the parallel computer as shown in Figure . Task Gantt
To sktech the circles in the visualization, you need to use the paramteric equation of a circle (x = r cos (Θ), y = r sin(Θ). A circle can be shown as a polygon where the points of
Enumerate about the Specialised hardware Specialised hardware such as protected memory or cryptographic memory module for storing and protecting the keys proves to be a good s
They are of two types. They are big endian and little endian. Memory is separated into two bank, 1:even bank 2:odd bank.
Define Flowchart. A process of expressing an algorithm by a collection of linked geometric shapes containing explanations of the algorithm's steps.
Explain the differences between Internal and external fragmentation. Internal and external fragmentation (1) While memory allocated to a process is a little larger than th
Perform the 23 - 48 operations using the 2's complement method. Ans. Given 23 - 48 firstly add them 23 0 1 0 1 1 1 - (- 48) +
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