Wednesday, September 15, 2010

s-r latch

Latch circuits such as the S-R latch and the D latch are often referred to as transparent digital devices. Explain what this term means, and why latches are classified as such?
(manpreet)

8 comments:

  1. The word transparent comes from the fact that, when the enable input is on, the signal propagates directly through the circuit, from the input to the output .
    With E high the signals can pass through the input gates to the encapsulated latch for all signal combinations except for (0,0) = hold then immediately reproduce on the (Q,Q').D & SR are closely related and can be similarly constructed.So it is also known as transparent latches.

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  2. In electronics, a latch is a kind of bistable multivibrator, an electronic circuit that has two stable states and therefore can store one bit of information. Today the word is mainly used for simple transparent storage elements, while slightly more advanced non-transparent (or clocked) devices are described as flip-flops

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  3. It is because when the enable input is on, the signal would propagate directly through the circuit, from the input D to the output Q.

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  4. Since it can be used to store only 1 bit data at a time and it is also very easy to use.

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  5. B'coz they store only one bit at a time and they r easy 2 use.....

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  6. Coz the signal can travel directly through the circuit,from D to Q.

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  7. bcos the signal can travel directly through the circuit,from D to Q and they store only one bit at a time and also the signal would propagate directly through the circuit.

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