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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
One's Complement Operator: ~ The one's complement operator, sometimes called the "bitwise complement" or "bitwise NOT" operator, produces the bitwise one's complement of its op
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Perform the - 48 - 23 operations using the 2's complement method. Ans. - 48 - 23 = - 48 + (-23) -48 = 1 1 0 1 0 0 0 0 -23 = 1 1 1 0 1 0 0 1 = -71
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Explain the Resolution of an ADC. Ans. Resolution- It is the smallest possible change in input voltage the same as the fraction of percentage of the full s
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Question 1: (a) What is the difference between IT (Information Technology) and ICT(Information Communication Technology) (b) Explain why information systems are so im
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