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Draw a schemetic to demultiplex bus ad0-ad7 using any octal latch in 8085 microprocessor?
The 8085 microprocessor is used IC 74LS373 to latch the address of 8085. Basically latch is consists of 8 flip flops. Generally we used D-flip flops (Delay).
The clock of these flip flops are connected together and available as a output pin called enable.
Working : The address will appear on AD0 AD7 lines. The ALE will go high and forcing
Enable = 1. This will make latch enable and ready to work. Before address disappears ALE = 0. This will make latch disable. AD0 - AD7 will now be used as data bus.
Hence, AD0 - AD7 (low order) address bus of the 8085 microprocessor is multiplexed (time-shared) with the data bus. The buses need to be demultiplexed.
What else can I help you with?
What does the ALE signals represent?
ALE signals means 'address latch enable' .If its value is 1,it enable the latch but doesn't store. and when its value is 0 it store the contents of latch.
What is a latch in microprocessor?
A latch is a type of flip-flop circuit that is used to store digital information in a microprocessor or other digital system. A latch is essentially a digital memory element that can hold a single bit of information (i.e. a "1" or "0"). Latches can be used to store data that needs to be held temporarily, such as the current state of a program, or to create a temporary buffer for data that is being moved between different parts of a system.
What is latch in microprocessor?
Latch are just like inputs which are used to set or reset the output for a given combination.
What is a transparent latch in a microprocessor?
A transparent latch (or simply a latch) is a digital logic device that can store two stable states with a level sensitive control signal called enable/latch, when this control signal is in the enable state the latch device transparently passes its input signal to its output, when this control signal is in the latch state the latch device holds its output in the current state and ignores the input signal. This behavior is different from flip flops (e.g. D flip flop), which are usually clocked and often edge sensitive not level sensitive.
How ale signal demultiplex ad0 ad7 bus?
As AD7-AD0 lines serve a dual purpose they have to be demultiplexed to get all the information. The address's high order bits remain on the bus for 3 clock periods. ... An external latch is used to save the value of AD7-AD0 when it is carrying the address bits so that the entire address remains for the 3 clock cycles.
What is latch?
a latch is like a lock
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The door latch may not retract properly due to a misalignment of the latch mechanism, a worn-out latch, or debris blocking the latch from retracting.
Why won't the door handle latch properly?
The door handle may not latch properly due to a misalignment of the latch mechanism, a worn-out latch, or a loose connection between the handle and the latch.
What is the birth name of Rickey Latch?
Rickey Latch's birth name is Rickey L. Latch.
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The door latch may not close properly due to misalignment, a faulty latch mechanism, or a worn-out latch.
Why won't the door knob latch properly?
The door knob may not latch properly due to a misalignment of the latch mechanism, a loose screw, or a worn-out latch.
Your interior door latch on your 1997 Chevy silverado is not releasing the latch How do you fix?
Replace the door latch.
