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Q. Explain functions of direct memory access?
Though CPU intervention in DMA is minimised however it should use path between interfaces that is system bus. So DMA involves an extra interface on system bus. A scheme known as cycle stealing permits DMA interface to transfer one data word at a time, after that it should return control of bus to processor. Processor merely delays its operation for one memory cycle to permit directly memory I/O transfer to 'steal' one memory cycle. When an I/O is requested processor issues a command to DMA interface by transmitting to DMA interface the subsequent information (Figure below):
Figure: DMA block diagram
an asyncronous sequential circuit is described by the the exitatio function and the output function y=x1x2''+(x1=x2'')y output function z=y a)draw the logic diagram of the circuit.
Condition codes are the list of possible conditions that can be tested through conditional instructions. Typical conditional instructions have: conditional branches, conditional ju
#questifind core radius for single mode operation at 850nm in SI fibre with n1=1.480 & n2=1.47 what is NAon..
Fuzzy Logic - artificial intelligence: In the above logic, we have been concerned with truth whether propositions and sentences are true. But, with some natural language statem
How can you pass a struct by reference in e? The question is phrased in a tricky way because passing by reference is the default and only possible way to pass structs in e. I
The scheduling in which CPU is allocated to the process with least CPU-burst time is called? Ans. Shortest job first Scheduling wherein CPU is allocated to the process with lea
Explain in brief about the broadband It isn't just computers which can be linked without wires, different peripheral devices can be linked to a computer system without the need
"Super ASCII", if it contains the character frequency equal to their ascii values. String will contain only lower case alphabets (''a''-''z'') and the ascii values will starts from
Q. Illustrate the Cache Memory Operation? It comprises a copy of a part of main memory contents. When a program is running and CPU tries to read a word of memory (instruction o
Modular programming denotes to the practice of writing a program as a sequence of independently assembled source files. Every source file is a modular program intended to be assemb
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