What is mod in ripple counter?
The 3-bit ripple counter used in the circuit above has eight different states, each one of which represents a count value. Similarly, a counter having n flip-flops can have a maximum of 2 to the power n states. The number of states that a counter owns is known as its mod (modulo) number.
How do you make a D flip-flop counter?
Design a circuit for an edge triggered 4-bit binary up counter (0000 to 1111). When it reaches “1111”, it should revert back to “0000” after the next edge. Use positive edge triggered D flip-flop (shown in the below figure) to design the circuit….Circuit Design of a 4-bit Binary Counter Using D Flip-flops.
| Present State (Q) | Input (D) | Next State (Q+) |
|---|---|---|
| 0 | 0 | 0 |
| 0 | 1 | 1 |
| 1 | 0 | 0 |
| 1 | 1 | 1 |
What is a mod 11 counter?
A synchronous counter is one which has the same clock input for all its flip flops. A MOD 11 synchronous counter counts from 0000 to 1010. Hence it will require four T flip flops. Synchronous counters are designed by using excitation table to determine the combinational logic of inputs to each flip flop.
What is the use of mod 10 counter?
Counting Sequence of Decade counter A decade counter is called as mod -10 or divide by 10 counter. It counts from 0 to 9 and again reset to 0. It counts in natural binary sequence. Here 4 T Flip flops are used.
What is MOD 10 up counter?
A decade counter is called as mod -10 or divide by 10 counter. It counts from 0 to 9 and again reset to 0. It counts in natural binary sequence. Here 4 T Flip flops are used. It resets after Q3 Q2 Q1 Q0 = 1001.
Is MOD counter synchronous or asynchronous?
As synchronous counters are formed by connecting flip-flops together and any number of flip-flops can be connected or “cascaded” together to form a “divide-by-n” binary counter, the modulo’s or “MOD” number still applies as it does for asynchronous counters so a Decade counter or BCD counter with counts from 0 to 2n-1 …
Why we use D flip-flop in counter?
A D-Type Flip-Flop Circuit can be used to store 1 bit of information. It has two input pins (Called D (Data) and E (Enabler) and two output pins (Q and Q = NOT Q). When the enabler input E is set to 0, the output Q cannot be changed. It remains as its previous value.
What is the mod of a ripple counter?
Asynchronous counters are also called ripple-counters because of the way the clock pulse ripples it way through the flip-flops. The MOD of the ripple counter or asynchronous counter is 2 n if n flip-flops are used.
What is a n-bit ripple counter?
A n-bit ripple counter can count up to 2 n states. It is also known as MOD n counter. It is known as ripple counter because of the way the clock pulse ripples its way through the flip-flops. Some of the features of ripple counter are:
What is ripple up-counter?
The name ripple counter is because the clock signal ripples its way from the first stage of Flip-flops to the last stage. There are two types of counters. Synchronous counters and Asynchronous Counters. The asynchronous counter has many types. Some of them are given below. Ripple up-counter starts counting from 0 and counts up to its maximum range.
What is the range of a ripple counter?
Asynchronous counters are also called ripple-counters because of the way the clock pulse ripples it way through the flip-flops. The MOD of the ripple counter or asynchronous counter is 2 n if n flip-flops are used. For a 4-bit counter, the range of the count is 0000 to 1111 (2 4 -1).