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.
a. Explain the meaning of frame buffer? Draw a block diagram showing the method for scanning out an image from frame buffer to display surface. b. Explain the structure of plasm
Q. Example on Distribution of Data? !HPF$ PROCESSORS P1(4) !HPF$ TEMPLATE T1(18) !HPF$ DISTRIBUTE T1(BLOCK) ONTO P1 Consequently of these instructions distribution of
What is Synchronous reset? Synchronous reset: Synchronous reset logic will synthesize to smaller flip-flops, mainly when the reset is gated along with the logic generating t
Which interface controls what is shown on the p.c.? Presentation Interface controls what is shown on the p.c
State the term- Interviewing This involves a one to one question & answer session between analyst and customer/employee. A good method if analyst wants to probe deeply into on
What are the Process states? By the courses of implementation, processes change state. Status of a process is express by its present activity. Dissimilar practical states of
Design an OR to AND gates combinational network and NAND only n/w for the following Boolean expression: A'BC'D + ABC'D' + A'B'CD' + A'BCD'
Reprographic Methods i) Thermography ii) Dyeline jii) Microfiche iv) Fax In this unit you have learnt that: Used for Methods of reprography are used for the
Describe about the role of bitmap indexes to solve aggregation problems? Ans) Bitmaps are very useful in begin schema to join large databases to small databases. Answer queries
Step 1: Click on the icon in the object tool bar Or Insert -> SSI Step 2: Select the file Step 3: Add the file Step 4: Provide the URL (where to be attached) Step
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