Register
On the 74ls74 d flip-flop, the clk input has a small triangle. the pr (preset) and clr (clear) inputs have a circle. what do these symbols mean?
29.1k views
3 votes
On the 74ls74 d flip-flop, the clk input has a small triangle. the pr (preset) and clr (clear) inputs have a circle. what do these symbols mean?

User Mayling
by
8.3k points

1 Answer

4 votes
The triangle indicates that the clock signal is an edge-triggered signal.
The circle indicates that the signal is low-active (ie., inverted).
The 74LS74 has a positive-edge trigger clock (low to high).
User Abhishek Gaur
by
9.1k points
← Prev Question Next Question →

Related questions

Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Other Questions

“What does it mean when we “rework” copyrighted material?”
The book shows how to add and subtract binary and decimal numbers. However, other numbering systems are also very popular when dealing with computers. The octal (base 8) numbering system is one of these.
Seven basic internal components found in a computer tower
describe an advance in technology that makes life more enjoyable. what discoveries contribute to this technology?
Disadvantages of using animation in advertising? advantages and disadvantages of using animation for education? advantages and disadvantages of using animation in entertainment?
Link Copied!