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The I/O interface provides a technique for transferring information between external I/O devices and internal storage. Peripherals linked to a computer require special communication links for interfacing them with CPU. Objective of communication link is to resolve differences which exist between central computer and every peripheral. The key differences are:
To resolve these differences, computer systems include special hardware component between the CPU and peripherals to supervise and synchronize all input and output transfers. These components are called interface units because they interface between the processor bus and the peripheral device.
Now we will learn how to compile and run PVM programs. To compile the program change to directory pvm/lib/archname where archname is architecture name of your computer. Then the su
What is program controlled I/O? In program controlled I/O the processor repeatedly checks a status flag to achieve the needed synchronization among the processor and an input a
The velocity of sound in air is 49.02 feet per second where is the air temperature in degrees Rankine. Write a function to execute this. If just 1 argument is passed to the f
Relocatable programs? Ans. Relocatable programs can be loaded almost anywhere inside the memory.
Explain how a shift register can be used as a ring counter giving the wave forms at the output of the flipflops. Ans: Shift Register as a Ring Counter: A Ring Counter is a
structured programming
Q. Write an assembly function which hides the cursor? Write an assembly function which hides the cursor. Call it from a C program. . PUBLIC CUROFF
examples of virtual memory
Q.What is Canonical and Standard Forms? An algebraic expression can express in two forms: i) Sum of Products (SOP) for example (A . B¯) + (A¯ . B¯) ii) Produ
Design a MOD-6 synchronous counter using J-K Flip-Flops. Ans: Design of Mod-6 Counter: To design the Mod-6 synchronous counter, contain six counter states (that is, from
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