Which of the following statements regarding the small triangles in the IEEE/ANSI symbols for flip-flops is TRUE?
A) Triangles internal and external to the rectangle indicate active LOW inputs are required.
B) A triangle within the rectangle means edge-triggered and an external triangle indicates an active LOW input.
C) Internal triangles require active LOW inputs whereas external triangles indicate Don't Care conditions.
D) A triangle external to the rectangle means edge-triggered and internal triangles indicate active LOW inputs.
Question 2
Which of the following logic devices is specifically designed to produce clean, fast-changing output signals?
A) Schmitt-trigger B) J-K flip-flop C) NOR latch D) NAND latch
Lewis symbols,(Figure 1)
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