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Define the DMA controller interface.
A DMA controller interfaces along with a few peripherals which may request DMA. The controller chooses the priority of simultaneous DMA requests communicates along with the peripheral and the CPU, and gives memory addresses for data transfer. DMA controller generally used with 8088 is the 8237 programmable device.
The 8237 is actually a special-purpose microprocessor. Normally this appears as part of the system controller chip-sets. The 8237 is a 4-channel device type. All channels are dedicated to an exact peripheral device and able of addressing 64 K bytes section of memory.
8237 microprocessor
Write a short summary of the AM superhet receiver, in exacting consider how the demodulation stage works, and remark on the choice of component values used.
Determine the shaft power output: A 6-pole, 50 Hz, 3-phase induction motor running on full load develops a useful torque of 180 Nm when the rotor emf frequency is 2 Hz. Determ
Tri State Devices Tri State devices have three states logic 1 logic 0 and high impedance. A tri state device ( Buffer/ Inverter) has three lines output enable as shown
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Q. What are the conditions required to be fulfilled to sustain the oscillations? The conditions required to be fulfilled to sustain the oscillations are: 1. The loop gain mu
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Discuss MACRO assembler directive with example. MACRO: A sequence of instructions to that has a name is assigned is termed as macro. Macros and subroutines are the
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Design a low noise amplifier using an Infineon RF transistor BFP640. The amplifier is to be used to amplify the L2 GPS signal and so the centre frequency is 1227MHz and bandwidth 4
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