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2. Frequency divider - Wikipedia

   en.wikipedia.org/wiki/Frequency_divider

   An animation of a frequency divider implemented with D flip-flops, counting from 0 to 7 in binary. For power-of-2 integer division, a simple binary counter can be used, clocked by the input signal. The least-significant output bit alternates at 1/2 the rate of the input clock, the next bit at 1/4 the rate, the third bit at 1/8 the rate, etc.

3. 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 ...

4. Flip-flop (electronics) - Wikipedia

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

   Specifically, the combination J = 1, K = 0 is a command to set the flip-flop; the combination J = 0, K = 1 is a command to reset the flip-flop; and the combination J = K = 1 is a command to toggle the flip-flop, i.e., change its output to the logical complement of its current value. Setting J = K = 0 maintains the current state.

5. 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

6. Shift register - Wikipedia

   en.wikipedia.org/wiki/Shift_register

   As "data in" presents 1,0,1,1,0,0,0,0 (in that order, with a pulse at "data advance" each time—this is called clocking or strobing) to the register, this is the result. The right hand column corresponds to the right-most flip-flop's output pin, and so on. So the serial output of the entire register is 00010110.

7. List of 4000-series integrated circuits - Wikipedia

   en.wikipedia.org/wiki/List_of_4000-series...

   The following is a list of CMOS 4000-series digital logic integrated circuits.In 1968, the original 4000-series was introduced by RCA.Although more recent parts are considerably faster, the 4000 devices operate over a wide power supply range (3V to 18V recommended range for "B" series) and are well suited to unregulated battery powered applications and interfacing with sensitive analogue ...