(a) For Figure 9-44, describe the conditions necessary to transmit data from device 3 to the microprocessor....

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(a) For Figure 9-44, describe the conditions necessary to transmit data from device 3 to the microprocessor.

(b) What will the status of the data bus be when none of the devices is enabled?

Figure 9-44

CLOCK ENABLE 1 Keyboard ENABLE 2> Device-1 eight-bit counter Device-2 keyboard. encoder aggagag OE OE Data

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Digital Systems Principles And Application

ISBN: 9780134220130

12th Edition

Authors: Ronald Tocci, Neal Widmer, Gregory Moss

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Question Posted: Nov 16, 2023 09:26 AM

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(a) For Figure 9-44, describe the conditions necessary to transmit data from device 3 to the microprocessor....

Question:

CLOCK ENABLE 1 Keyboard ENABLE 2> Device-1 eight-bit counter Device-2 keyboard. encoder aggagag OE OE Data bus Microprocessor (CPU) Device-3 74HC126 buffers DIP switches OE < ENABLE 3 Note: V indicates tristate outputs.

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a ENABLE 3 must be activated ENABLE 1 and ENABLE 2 must be in their inactive state This will put the ...View the full answer

Digital Systems Principles And Application

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