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Explain the various modes in which DMAC works.
Working of Direct memory access controller:
The modes of operation has demand mode, block mode, single mode and cascade mode. Demand mode transfers data till an external EOP is input or till the DREQ input becomes inactive. Particular mode releases the HOLD after all byte of data transferred. Block mode automatically transfers the no. of bytes specified by the county register for the channel. Cascade mode is used while more than one 8237 is present into a system.
Q. The voltage wave form of Figure is applied to an RLC series circuit with R = 2, L = 2H, and C = 1 F. Obtain i(t) in the series circuit. (Note that the capacitor and inductor va
Q. Explain the External Data Bus? External Data Bus: A bus which connects a computer to peripheral devices. 8088 microprocessor has 16-bit registers, 16-bit internal data bus i
Define the basic working principle , process characteristics,advantages, disadvantages and application of Laser Beam Machining Process.
Connect the TTL output (square wave) of the "Audio Oscillator" to the "Scope Selector". Adjust the frequency of the square wave to 2 kHz. Observe and record the time domain pict
why do we use commutator?
#questsdfsdfsdfsion..
Hexadecimal to Binary Conversion Conversion from hexadecimal to binary is the reverse of this process. Express each hexadecimal digit in four bit binary equivalent
Q. Explain working of CRT with suitable diagram discuss the focusing arrangement. What is need of aquadag? OR Why are the operating voltages of a cathode ray tube arran
stack Pointer (SP) It is also a 16 bit register and a memory pointer similar to program counter. It holds the memory address of the top of the stack. Stack is a part of
Q. Consider the circuit configuration shown in Figure. Let V i = 1V, R 1 = 1000, R 2 = 2000, and A = 3. (a) Compute i 2 . (b) If R 1 changed to 500 , recompute i 2 .
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