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Q. What is Input-output processors?
let's briefly summarize the development in area of input/output functions. These can be briefed as below:
1. CPU directly controls a peripheral device.
2. Addition of I/O controller or I/O interface: CPU employs programmed I/O with no interrupts. CPU was separated from details of external I/O interfaces.
3. Contained use of I/O controllers however with interrupts: CPU need not spend time waiting for an I/O operation to be executed, increasing efficiency.
4. Direct access of I/O interface to memory through DMA: CPU involvement decreased to at beginning and at end of DMA operation.
5. CPU directs I/O processors to execute an I/O program in memory. I/O processor fetches as well as executes these instructions with no CPU intervention. This permits CPU to specify a series of I/O activities and to be interrupted only when complete sequence has been performed. With this architecture a large set of I/O devices can be managed with minimum CPU involvement.
With last two steps (4 and 5) a main change takes place with introduction of concept of an I/O interface capable of executing a program. For steps 5 the I/O interface is frequently referred to as an I/O processor and I/O channel.
Benefits of object oriented Modelling There are many benefits and advantages of object oriented modelling. Emphasis on quality and reuse are the major highlights of OOM. OOM p
Ans) The simplest way is to make a new selection with Ellipse Select tool and stroke it (Edit -> Stroke Selection...). We welcome patches that add tools to draw geometric primitive
Set up the minunit test framework examples in your environment (i.e. build or compile the code). Once you can run the example, use the minunit test framework to create and run a bo
The hexadecimal number for (95.5) 10 is ? Ans. (95.5) 10 = (5F.8) 16 Integer part Fractional part 0.5x16=8.0
Use of Hypertext links in Internet access From the user's point of view, the Web having of a vast, worldwide collection of documents i.e. pages. Every page may have links (poin
please suggest me ,how to write microopertions,and study for computer architecture
Advanced aspects of assembly language programming in this section. A number of these aspects give assembly an edge over high level language programming as far as efficiency is conc
With its newer range of PCs IBM introduced 101-key Enhanced/Advanced keyboard. This keyboard is fundamental keyboard behind modern QWERTY keyboards. This has function keys aligned
Subtraction 11001-10110 using 1's complement Ans. 11001 - 10110 01001 is 1' s Compliment of 10110, so 1 1 0 0 1 + 0 1 0 0 1 ------------------ 1 0 0 0 1 0 Add 1
Can we use WRITE statements in screen fields? If not how is data transferred from field data to screen fields? We cannot write field data to the screen using the WRITE stateme
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