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  2. Counter (digital) - Wikipedia

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

    A 4-bit synchronous counter using JK flip-flops. In a synchronous counter, the clock inputs of the flip-flops are connected, and the common clock simultaneously triggers all flip-flops. Consequently, all of the flip-flops change state at the same time (in parallel). For example, the circuit shown to the right is an ascending (up-counting) four ...

  3. Synchronous circuit - Wikipedia

    en.wikipedia.org/wiki/Synchronous_circuit

    In digital electronics, a synchronous circuit is a digital circuit in which the changes in the state of memory elements are synchronized by a clock signal. In a sequential digital logic circuit, data is stored in memory devices called flip-flops or latches. The output of a flip-flop is constant until a pulse is applied to its "clock" input ...

  4. List of 7400-series integrated circuits - Wikipedia

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

    synchronous 8-bit up/down counter, asynchronous clear 24 SN74ALS867A: 74x869 1 synchronous 8-bit up/down counter, synchronous clear 24 SN74ALS869: 74x870 1 dual 16x4 register files 24 SN74AS870: 74x871 1 dual 16x4 register files 28 SN74AS871: 74x873 2 dual 4-bit transparent latch with clear three-state 24 SN74ALS873B: 74x874 2

  5. Comparison of synchronous and asynchronous signalling

    en.wikipedia.org/wiki/Comparison_of_synchronous...

    Synchronous and asynchronous transmissions are two different methods of transmission synchronization. Synchronous transmissions are synchronized by an external clock, while asynchronous transmissions are synchronized by special signals along the transmission medium.

  6. Sequential logic - Wikipedia

    en.wikipedia.org/wiki/Sequential_logic

    Nearly all sequential logic today is clocked or synchronous logic. In a synchronous circuit, an electronic oscillator called a clock (or clock generator) generates a sequence of repetitive pulses called the clock signal which is distributed to all the memory elements in the circuit. The basic memory element in synchronous logic is the flip-flop ...

  7. Incremental encoder - Wikipedia

    en.wikipedia.org/wiki/Incremental_encoder

    A quadrature decoder converts the A and B signals from an incremental encoder into direction and count enable signals, which are used to control a synchronous up/down counter Incremental encoder interfaces commonly use a quadrature decoder to convert the A and B signals into the direction and count enable (clock enable) signals needed for ...

  8. The ketchup challenge is stirring up controversy by testing ...

    www.aol.com/news/ketchup-challenge-women-testing...

    “Asking my husband to clean up ketchup off the counter,” reads the text on a TikTok by @brooklynandbailey with 1.3 million views. After squeezing out the condiment on their counter, the ...

  9. Linear-feedback shift register - Wikipedia

    en.wikipedia.org/wiki/Linear-feedback_shift_register

    LFSR counters have simpler feedback logic than natural binary counters or Gray-code counters, and therefore can operate at higher clock rates. However, it is necessary to ensure that the LFSR never enters a lockup state (all zeros for a XOR based LFSR, and all ones for a XNOR based LFSR), for example by presetting it at start-up to any other ...