How does the D-trigger work?

Question

Electronics

Where can I read about Asynchronous D-flip-flop with preset?

Answer 1

First link in Google: www.asvcorp.ru/tech/digit/part252.html

Combined D flip-flops have additional inputs for asynchronous setting of logical 0 and 1 - inputs S and R. The circuit and symbol of one such flip-flop is shown in fig. 2.44. The trigger is assembled on six NAND elements according to the scheme of three RS flip-flops. The /S and /R inputs are used to initially set the trigger to a certain state.