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What is Direct memory access?
Direct memory access (DMA) is a process wherein an external device takes over the control of system bus by the CPU.DMA is for high-speed data transfer by/to mass storage peripherals, for example: hard disk drive, CD-ROM, magnetic tape and sometimes video controllers. For illustration, a hard disk may boast a transfer rate of 5 M bytes per second, that is 1 byte transmission every 200 ns. To generate such data transfer through the CPU is both unnecessary and undesirable.
Q. What are the performance measures of oscillator circuits? 1. Stability: This is determined by the passive components. R, C and L determine frequency of oscillations. If R ch
1. The voltage across a 1 - μF capacitor is given. Which is the sinusoidal expression for the current? a) 30 sin200t b) 70cos (800t - 20°) 2. At what frequency will the re
What are Difference Equations? A continuous-time system can be described by differential equations. Likewise, a discrete-time system can be explained by difference equations. T
how do you define the expertise for this hot line maintenance?
Q. Consider the toroid shown in figure made up of three ferromagnetic materials. Material a is nickel-iron alloy having a mean arc length la of 0.6 m; material b is medium silicon
Lack of Accountability - High Technical Usage In huge, complex and widespread ST&D networks such as ours, the subsequent factors pose problems in arriving at reasonable estima
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Q. Illustrate Computer-controlled routing? Computers are employed in network with common channel signaling (CCS) features. In CCS, there is a separate computer-controlled signa
Design and draw a circuit using the cascade system to operate two cylinders (A and B) which, on the operation of a start valve, produces the sequence A - B + B - A+. The cylinder
Cite a specific example in which the engineer must provide maximum efficiency for a given cost
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