What is the use of ALE

What is the use of ALE
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Answer :

The ALE is used to latch the lower order address so that it can be available in T2 and T3 and used for identifying the memory address. During T1 the ALE goes  high,  the  latch  is  transparent  ie,  the  output  changes  according  to  the  input data, so the output of the latch is the lower order address. When ALE goes low the lower order address is latched until the next ALE.
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