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2. Frequency divider - Wikipedia

   en.wikipedia.org/wiki/Frequency_divider

   An arrangement of D flip-flops is a classic method for integer-n division. Such division is frequency and phase coherent to the source over environmental variations, including temperature. The easiest configuration is a series where each D flip-flop is a divide-by-2. For a series of three of these, such a system would be a divide-by-8.

3. Flip-flop (electronics) - Wikipedia

   en.wikipedia.org/wiki/Flip-flop_(electronics)

   When T is held high, the toggle flip-flop divides the clock frequency by two; that is, if clock frequency is 4 MHz, the output frequency obtained from the flip-flop will be 2 MHz. This "divide by" feature has application in various types of digital counters.

4. List of 7400-series integrated circuits - Wikipedia

   en.wikipedia.org/wiki/List_of_7400-series...

   2 dual J-K flip-flop, asynchronous clear 14 SN54LS73A: 74x74 2 dual D positive edge triggered flip-flop, asynchronous preset and clear 14 SN74LS74A: 74x75 1 4-bit bistable latch, complementary outputs 16 SN74LS75: 74x76 2 dual J-K flip-flop, asynchronous preset and clear 16 SN74LS76A: 74x77 1 4-bit bistable latch 14 SN54LS77: 74H78 2

5. Counter (digital) - Wikipedia

   en.wikipedia.org/wiki/Counter_(digital)

   An asynchronous (ripple) counter is a "chain" of toggle (T) flip-flops wherein the least-significant flip-flop (bit 0) is clocked by an external signal (the counter input clock), and all other flip-flops are clocked by the output of the nearest, less significant flip-flop (e.g., bit 0 clocks the bit 1 flip-flop, bit 1 clocks the bit 2 flip-flop ...

6. Shift register - Wikipedia

   en.wikipedia.org/wiki/Shift_register

   At each advance, the bit on the far left (i.e. "data in") is shifted into the first flip-flop's output. The bit on the far right (i.e. "data out") is shifted out and lost. The data is stored after each flip-flop on the "Q" output, so there are four storage "slots" available in this arrangement, hence it is a 4-bit register.

7. NYT ‘Connections’ Hints and Answers Today, Sunday, December 15

   www.aol.com/nyt-connections-hints-answers-today...

   Spoilers ahead! We've warned you. We mean it. Read no further until you really want some clues or you've completely given up and want the answers ASAP. Get ready for all of today's NYT ...