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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.
Virtual memory can be implemented with ? With Segmentation and Paging Virtual memory can be implemented.
CODE SEGMENT ; Set DS register MOV AX, DATA ; boiler plate code to set the DS register so that the MOV DS, AX ; program can access the data segment.
Define Refresh Circuits? It is a circuit which make sure that the contents of a DRAM are maintained when every row of cells are accessed periodically.
Five popular hashing functions are as follows:- Division Method Midsquare Method Folding Method Multiplicative method Digit Analysis
expression for thickness and refractive index of coating material to act as anti reflection coating
Q. Show Arithmetic Subtraction? The subtraction can be done easily using 2's complement by taking 2's complement of value which is to be subtracted (inclusive of sign bit) and
How does dynamic memory allocation help in managing data
Your shell must accept commands from the user. The first step to implement this will be reading a line of input. This section will focus on what to do with the line of input after
Explain the Feasibility Study This includes writing a report to convince management of the merits of adopting proposed new system. Some features of the study comprise: T
One cannot use SELECT statements in a report program linked to a Logical Database False. You can use th SELECT statements.
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