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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.
End-user Computing: The growing base of personal computers and local area networks in the end user community are supported. This offers installation services, training and helps de
Q. Example of arrays pointers? General form of declaration of array in Fortran 90 is type, DIMENSION(bound) [,attr] :: name E.g. the declaration INTEGER, D
i want to make an assignment about kirchoff''s law
The logic 0 level of a CMOS logic device is approximately ? Ans. The low level is 0 volts approx in CMOS logic device.
Let's provide you a fundamental illustration by which you may be able to define the concept of instruction format. Let us consider the instruction format of a MIPS computer. MI
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Determine in detail about MP3 (MPEG-3) MPEG-3 uses an audio compression technology; it compresses CD-quality sound by a factor of about 10 while retaining most of the quality f
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Q. Explain about strategic planning and sensitivity training? Formulation of business strategy with the due consideration of environmental analysis and organizational appraisal
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