Flip flop Digital System

Sequential networks defines two valued network where yields are dependent on the interface, not only the inputs to the times, but also previous history (or order) in the context of the inputs. The network must be kept for a period of inputs and past experience. For this reason, the successive memory on your network. The mechanism used, of the one part, and shall keep the data is called the internal state of another State or simply indicate the location of the network. Physically internal state is a collection of signals as set out in points in the network. In this way, the inputs, at any time the internal state of the network of sequential is present with specifies the network outputs.

There are two kinds of sequential networks. They distinguish between network signals to the Scheduler. Synchronous sequential network is one in which it carries out its activities shall be determined in accordance with the signal values only separate times on time. These networks must, as a general rule, the master clock generator, which produces a series of clock pulses. It is these clock pulses, effectively feed signals that the sample specifies the network activity.The successive phases of the network the second type is an asynchronous serial input signal changes immediately on the network. [1] [2], in this case, affect the functioning of the network.

The logic of the basic regulation, the element that contains multiple networks, the memory is flip-flop. In fact, as a matter of fact, flip-flop is a simple sequential network.It can be demonstrated that all successive networks require the existence of feedback It has two stable. [1] [2] in the circumstances set out below. For each of these stable conditions associated with the status, or equivalently, the binary symbol storage.

There are two other general categories it. These are the master/slave flip-flops and edge trigger flip-flops. Master/slave flip-flop consists of two cascaded a component to store in each of the binary symbol.The first part is intended for the second part of the master and slave name.Data is entered, the master of one edge or the level of control signal, and is moved to the edge of the control, as shown in the following subordinate or signal level.In its simplest form, each section is latch. Launched flip-flops are designed to use either a positive or negative, the transition from the control signal will affect the treatment of information that the edge of the input rows. Triggering the edge of the flip-flop outputs the answer is almost immediately, because it is dependent only on the part of the propagation delays When a triggering threshold equivalent edge occurs. [1] [2], flip-flop, changes in the control remains in responding to the input signal to the edge of the following triggering.

Flip-flops is very important in the design of many digital system, such as the registry, a counter in the memory.