Why is JK flip flop called so n which among the following flip flops are faster : SR JK D or T ?

Question

faster in d sense d max operating frequency or d least propagation delay

Answer 1

From wiki:

The origin of the name for the JK flip-flop is detailed by P. L. Lindley, a JPL engineer, in a letter to EDN, an electronics design magazine. The letter is dated June 13, 1968, and was published in the August edition of the newsletter. In the letter, Mr. Lindley explains that he heard the story of the JK flip-flop from Dr. Eldred Nelson, who is responsible for coining the term while working at Hughes Aircraft.

Flip-flops in use at Hughes at the time were all of the type that came to be known as J-K. In designing a logical system, Dr. Nelson assigned letters to flip-flop inputs as follows: #1: A & B, #2: C & D, #3: E & F, #4: G & H, #5: J & K. Given the size of the system that he was working on, Dr. Nelson realized that he was going to run out of letters, so he decided to use J and K as the set and reset input of each flip-flop in his system (using subscripts or somesuch to distinguish the flip-flops), since J and K were "nice, innocuous letters."

Answer 2

So why is the interface to Scanners called TWAIN? Does it really stand for Technology Without An Interesting Name?

From Wikipedia, the free encyclopedia:

The first electronic flip-flop was invented in 1919 by William Eccles and F. W. Jordan [1]. It was initially called the Eccles-Jordan trigger circuit and consisted of two active elements (radio-tubes). The name flip-flop was later derived from the sound produced on a speaker connected with one of the backcoupled amplifiers output during the trigger process within the circuit.

Read some specs. When you have questions, take the time to do a little research first... what are you??? a cave man?

Start using google, so you don't fall too far BEHIND. George W. Bush can't possibly SAVE you. No child left behind HOLDS everyone back. You have to learn how to compete a bit.

Good luck and Happy Computing!

Answer 3

d stands for "data", which means the signal at d is transferred to the "Q" output at the next clock pulse. j,k are arbitrary designations for a flip-flop with two data inputs. The signal at j is transferred to the Q output, the signal at k to the Q-bar output on the clock pulse. Flip-flop refers to a two-state device whose output can change state (flip or flop) with a clock signal.

Answer 4

fastest is the SR ff as it contain less number of gates thus least propagation delay..
i dont know y it is called jk maybe on designer's name