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Multiplexed Address/ Data Bus
Pins AD7 - AD) are used for multiplexed address data bus. This bus is bidirectional input output and serves two purpose. Initially the bus is used as lower order address bus later it is used as data bus. Means these lines are time shared and called multiplexed bus. Separating lower order address bus (A7- A0) and data bus (D7-D0) using a Iatch is known as de multiplexing address data bus de multiplexing is explained later in this chapter.
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