![]() SD and RD are connected to the input terminals of the basic RS flip-flop. Therefore, it has two functions of setting 0 and setting 1.įor edge D flip-flops, since the circuit has a blocking effect during CP=1, the data state of the D terminal changes during CP=1 and will not affect the output state of the flip-flop.ĭ flip-flops are widely used and can be used as digital signal register, shift register, frequency division and waveform generator, etc. The second state of the D flip-flop depends on the state of the D terminal before the trigger, that is, the second state=D. The former can be triggered when CP (clock pulse)=1, and the latter is mostly triggered on the leading edge of CP (positive transition 0→1). There are two trigger modes: level trigger and edge trigger. ![]() The flip-flop has two stable states, namely "0" and "1", which can be flipped from one stable state to another under the action of a certain external signal.ĭ flip-flops are composed of integrated flip-flops and gate circuits. Therefore, D flip-flops are widely used in digital systems and computers. It is the most basic logic unit that constitutes a variety of sequential circuits, and it is also an important unit circuit in digital logic circuits. ![]() D flip-flop is an information storage device with memory function and two stable states.
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