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Q. Explain working of Direct Memory Access?
In both programmed I/O and interrupt-driven processor is busy with executing input/output instructions and I/O transfer rate is limited by speed with which processor can test and service a device. What about a scheme that needs minimal intervention of CPU for input/output? These two types of shortcomings can be overcome with a more efficient technique called as DMA that behaves as if it has taken over control from processor. C Consequently the question is: why do we employ DMA interface? It is employed primarily when a large amount of data is to be transferred from I/O device to Memory.
The next important effort in the direction of devising an electromechanical computer was made at Harvard University mutually sponsored by IBM and Department of UN Navy, Howard Aike
What is data hazard in pipelining? What are the solutions? A data hazard is a situation in which the pipeline is stalled due to the data to be operated on are delayed for some
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Autonomous Rational an Agents: In many cases, it is inaccurate to talk about a single program or a single robot, as the multi-purpose and multi-tasking system of hardware and
State the Encryption and decryption process with example Encryption and decryption process in the Figure where Ram wants to send a confidential message to his friend Shyam. Ram
Compare and contrast POP e-mail to Web-based e-mail systems in terms of control, security, and accessibility.
Determine the salient features of a parallel programmable interface, 8255. 24 I/O lines in 3 8-bit port groups - A, B, C A, B can be 8-bit input or output ports C
Q. Show layout 84-key Keyboards? PC 83-key was the earliest keyboard provided by IBM with its first Personal Computers (PC). This had 83 keys. Afterwards IBM added one more key
A computer system that allows multiple users to run programs at similar time Multi tasking system
1) Describe challenges involved for both the sender and the receiver in the communication process. 2) Describe the purpose of a subject line in an email message and give gui
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