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Q. Explain functions of direct memory access?
Though CPU intervention in DMA is minimised however it should use path between interfaces that is system bus. So DMA involves an extra interface on system bus. A scheme known as cycle stealing permits DMA interface to transfer one data word at a time, after that it should return control of bus to processor. Processor merely delays its operation for one memory cycle to permit directly memory I/O transfer to 'steal' one memory cycle. When an I/O is requested processor issues a command to DMA interface by transmitting to DMA interface the subsequent information (Figure below):
Figure: DMA block diagram
Automatic Stock Control System in a Supermarket - Bar codes are associated to all goods/items sold by the supermarket as a means of identification - Every bar code is asso
how can we bimpliment half substractor using nand gate
How Web-Based Word Processing Works? Web-based word processors are hosted in the cloud, not on the hard drive-as are the documents formed with these applications. And these web
The Environment variable SCRIPT_NAME in CGI script specifies? In CGI script gives the path of URL after server name.
Q. Illustration of a demon program? When the PVM initialize it inspects the virtual machine in that it's to operate and creates a process known as PVM demon or simply pvmd on e
Explain about Physical model The Physical model describes concrete software and hardware components of system's context or implementation.
HCP
HTML is a Hyper text Markup Language and it is Scripting Language
A staircase light is controlled by two switches one at the top of the stairs and another at the bottom of stairs a. Make a truth table for this system. b. Write the lo
What are the types where relationship exists in Electronic Market Place? In this two forms of relationships can exist, they are: a. Customer/seller linkage is recognized at
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