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  2. Clock skew - Wikipedia

    en.wikipedia.org/wiki/Clock_skew

    In the zero-skew circuit of Figure 1, a long path goes from flip-flop FF1 to flip-flop FF2, and a short path, such as a shift-register path, from FF2 to FF3. The FF2 -> FF3 path is dangerously close to having a hold violation: If even a small amount of extra clock delay occurs at FF3, this could destroy the data at the D input of FF3 before the ...

  3. Contamination delay - Wikipedia

    en.wikipedia.org/wiki/Contamination_delay

    Here, the contamination delay is the amount of time needed for a change in the flip-flop clock input to result in the initial change at the flip-flop output (Q). If there is insufficient delay from the output of the first flip-flop to the input of the second, the input may change before the hold time has passed. Because the second flip-flop is ...

  4. Flip-flop (electronics) - Wikipedia

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

    When cascading flip-flops which share the same clock (as in a shift register), it is important to ensure that the t CO of a preceding flip-flop is longer than the hold time (t h) of the following flip-flop, so data present at the input of the succeeding flip-flop is properly "shifted in" following the active edge of the clock.

  5. Metastability (electronics) - Wikipedia

    en.wikipedia.org/wiki/Metastability_(electronics)

    Synchronizers may take the form of a cascade of D flip-flops (e.g. the shift register in Figure 3). [7] Although each flip-flop stage adds an additional clock cycle of latency to the input data stream, each stage provides an opportunity to resolve metastability. Such synchronizers can be engineered to reduce metastability to a tolerable rate.

  6. Counter (digital) - Wikipedia

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

    An asynchronous (ripple) counter is a "chain" of toggle (T) flip-flops in which 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 ...

  7. Ring counter - Wikipedia

    en.wikipedia.org/wiki/Ring_counter

    The straight ring counter has the logical structure shown here: Instead of the reset line setting up the initial one-hot pattern, the straight ring is sometimes made self-initializing by the use of a distributed feedback gate across all of the outputs except that last, so that a 1 is presented at the input when there is no 1 in any stage but the last.

  8. Multivibrator - Wikipedia

    en.wikipedia.org/wiki/Multivibrator

    The duration of state 1 (low output) will be related to the time constant R 2 C 1 as it depends on the charging of C1, and the duration of state 2 (high output) will be related to the time constant R 3 C 2 as it depends on the charging of C2. Because they do not need to be the same, an asymmetric duty cycle is easily achieved.

  9. Minecraft modding - Wikipedia

    en.wikipedia.org/wiki/Minecraft_modding

    A Minecraft mod is a mod that changes aspects of the sandbox game Minecraft. Minecraft mods can add additional content to the game, make tweaks to specific features, and optimize performance. Thousands of mods for the game have been created, with some mods even generating an income for their authors.