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We can try and prove the function of The Not Schmitt Gate as Clock Generator with following this Circuit Diagram in ELECTRONIC WORK BENCH And these are several information about THE NOT SCHMITT TRIGGER Schmitt Trigger Characteristic :   The output is HIGH until the input rises to 66% of rail voltage. The output goes LOW when the input goes above 66%. The output remains HIGH until the input fall to 33%.  A Schmitt Trigger gate can be wired as an oscillator, delay, inverter (and other functions, depending on the surrounding components). Fig: 5 shows the Schmitt Trigger wired as an  oscillator ,  delay  and  inverter : Each of the 6 gates in the 74c14 can be used to create a separate "building block" and this gives the chip a wide range of capabilities.  Schmitt Inverter Waveform Generator This simple waveform generator circuit consists of a single TTL 74LS14 Schmitt inverter logic gate with a capacitor,  C  connected between its input terminal and

A Johnson counter is a modified ring counter, where the inverted output from the last flip flop is connected to the input to the first. The register cycles through a sequence of bit-patterns. The MOD of the Johnson counter is 2n if n flip-flops are used. The main advantage of the Johnson counter counter is that it only needs half the number of flip-flops compared to the standard  ring counter  for the same MOD. The  switch-tail ring counter , also know as the  Johnson counter , overcomes some of the limitations of the ring counter. Like a ring counter a Johnson counter is a shift register fed back on its' self. It requires half the stages of a comparable ring counter for a given division ratio. If the complement output of a ring counter is fed back to the input instead of the true output, a Johnson counter results. The difference between a ring counter and a Johnson counter is which output of the last stage is fed back (Q or Q'). Carefully compare the feedback connection bel

A ring counter is a Shift Register (a cascade connection of flip-flops) with the output of the last flip flop connected to the input of the first. It is initialized such that only one of the flip flop output is 1 while the remainder is 0. The 1 bit is circulated so the state repeats every n clock cycles if n flip-flops are used. The "MOD" or "MODULUS" of a counter is the number of unique states. The MOD of the n flip flop ring counter is n. It can be implemented using  D-type flip-flops  (or JK-type flip-flops). And this below, using the D Flip-flops    Enable the flips flops by clicking on the RESET (Green) switch. The RESET switch is a on/off switch (similar to a room light switch) Click on CLK (Purple) switch and observe the changes in the outputs of the flip flops. The CLK switch is a momentary switch (similar to a door bell switch - normally off). The D flip flop clock has a rising edge CLK input. For example Q 1  behaves as follows: The D input