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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.
Voltage Quadrupler : A voltage quadrupler circuit is shown in fig. which provides output voltage V0 = 4 Vm. Operation : Capacitor C 1 , C 2 and C 3 charges to Vm, 2Vm and 2Vm
Q. A 100-kW, 230-V, dc shunt generator, with R a = 0.05 , and R f = 57.5 has no-load rotational loss (friction, windage, and core loss) of 1.8 kW. Compute: (a) The generato
Can we measure the resistor if it is installed in circuit board? Ans) You can calculate a resistor in a circuit but the circuit will most likely affect the value read (general
Q. Describe Pulse dialling? Pulse dialling: 1. Generated through make and break contact. 2. DC Current pulse is generated. 3. Each number is separated by a short
multiplexer,
Torque-Speed Characteristics of 3-Phase Induction Motors
How the interrupts can be masked/unmasked in 8086? The 8086 interrupt priorities are concerned; software interrupts have the highest priority, followed by NMI followed by INTR.
Equivalent Circuit of a Polyphase Induction Machine The inductionmachinemay be regarded as a generalized transformer inwhich energy is converted and electric power is transferr
Program counter holds the address of also the first byte of the next instruction to be fetched for implementation or the address of the next byte of a multi byte instruction, which
algorithm for Reversing the digits of an integer
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