![]() So you may have inadvertently searched for the same device.įrom a block-level perspective both the D-latch and the D-flip-flop are the same, but in the latter the CLK signal is edge-triggered.Ī special circuit must be uses to detect edges (an example is here or in the Wikipedia page). If the input is allowed to change the output only on the rising or falling edge of a control signal (denoted with CLK) then the device is called flip-flop (Some author uses the term edge-triggered flip-flop). If the input is allowed to change the output when a control signal (typically denoted E but sometime confusingly labelled as CLK) is held at a particular level (high or low), the device is called simple opaque latch (Some author uses the term level-triggered clocked flip-flop). If the input is always allow to change the output the device is called a simple transparent latch (Some author uses the term level-triggered flip-flop). The important aspect to consider is how the input is allowed to change the output. ![]() It's hard to find consistent terminology in the literature because the usage of the term flip-flop and latch has changed over time.
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