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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. Show Operation on JFET? The junction in the JFETis reverse-biased for normal operation.No gate current flows because of the reverse bias and all carriers flow from source to
Merits: 1. It is very simple to shift the operating point anywhere in the active region by just changing the base resistor (R B ). 2. A very small number of compon
Q. What are the applications of JFET? · FET is used as a buffer in measuring instruments, receivers since it has high input impedance and low output impedance. · FET's are u
With respect to serial communication define the parity. Besides the synchronization given by the use of start and stop bits, an additional bit termed as a parity bit may opt
Q. What are the different types of MOSFET transistors ? The metal-oxide semiconductor field-effect transistor (MOSFET) is a three-terminal active device which has many applicat
Q. Explain the working principle of an opto coupler? When it is necessary to block the voltage between one electronic circuit and another, and transfer the signal at the same t
what are the different digital modulation techniques?
Q. Explain the bandwidth for the curve and the applications of an RC coupled amplifier. Frequency response curve of an RC coupled amplifier was shown above(prev page). The cut
Transients in R-L-C circuits: Scenario The Laplace transform is a valuable mathematical tool which allows the solution of difficult differential equations to be easily de
Capacitor Filter: A capacitor filter is connected directly across the load is displayed in figure. The property of a capacitor is that it permits ac component and blocks
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