Table of Contents
- 1 What is the maximum counting speed of a 4-bit binary counter which is composed of flip-flops with a propagation delay of 25ns?
- 2 How many numbers can be counted by a 4-bit binary counter?
- 3 What is the maximum delay that can occur if 4 flip-flops?
- 4 What is the difference between a JK flip flop and an SR flip flop?
- 5 What is a 4-bit binary counter?
- 6 How does a 4-bit counter work?
- 7 What is 4-bit binary up down counter?
- 8 How do you convert JK FF to T FF?
- 9 What’s the maximum modulus of a 3 bit counter?
- 10 Can a frequency counter be made from a binary counter?
What is the maximum counting speed of a 4-bit binary counter which is composed of flip-flops with a propagation delay of 25ns?
Binary counter is ripple counter where the output one flip flop is clock input to next flip flop. So, maximum delay(time)= 4*25ns = 100 ns. = 10 MHz.
How many numbers can be counted by a 4-bit binary counter?
A block of 4 bits is called a nibble (half a byte!) and it can hold a maximum number of 1111 = 15 in decimal. Many counting circuits work with blocks of 4 bits because this number of bits is required to count up to 9 in decimal. (The maximum number with 3 bits is only 7).
What is the maximum delay that can occur if 4 flip-flops?
Explanation: Since a counter is constructed using flip-flops, therefore, the propagation delay in the counter occurs only due to the flip-flops. Each bit has propagation delay = 50ns. So, 4 bits or FFs = 50ns * 4 = 200ns.
How many FF are required for 4-bit up down counter?
In a 4-bit up-down counter, there are 4 J-K flip-flops required. For modulus-10 counter, N = 10. Therefore, 23 < = 10 < = 24. Thus, n = 4, and therefore, we require 4 FFs.
How do you convert one flip flop into another flip flop?
The conversion of flip-flops from one type to another is easily implemented by either modifying the connections or using additional gates. As we have seen, the basic SR flip-flop has two inputs, S and R to store a single bit but to do this we must activate both of these inputs simultaneously.
What is the difference between a JK flip flop and an SR flip flop?
The only difference between JK flip flop and SR flip flop is that when both inputs of SR flip flop is set to 1, the circuit produces the invalid states as outputs, but in case of JK flip flop, there are no invalid states even if both ‘J’ and ‘K’ flip flops are set to 1.
What is a 4-bit binary counter?
A binary counter is basically a state machine that just cycles through its states for each cycle of a clock signal. The counter in this example is a 4-bit asynchronous counter based on JK flip-flops. The flip-flops are connected with both their J and K terminals to the enable pin, putting them in “toggle mode”.
How does a 4-bit counter work?
A 4-bit Synchronous up counter start to count from 0 (0000 in binary) and increment or count upwards to 15 (1111 in binary) and then start new counting cycle by getting reset. Its operating frequency is much higher than the same range Asynchronous counter.
What is the maximum modulus of a 4-bit counter?
Exercise :: Counters – General Questions
| 54. | A 4-bit counter has a maximum modulus of ________. |
|---|---|
| A. 3 B. 6 C. 8 D. 16 Answer: Option D Explanation: No answer description available for this question. Let us discuss. Workspace Report errors Name : Email: View Answer Discuss |
Which one is a 4-bit binary ripple counter *?
Which one is a 4-bit binary ripple counter? Explanation: IC 7493 is a 4-bit binary ripple counter. It is a MOD-16 counter with 24 = 16 states. Explanation: IC 7493 consist of 4 J-K master-slave flip-flop.
What is 4-bit binary up down counter?
A 4-bit binary up/down counter counts sequence from 0000 to 1111 and 1111 to 0000. When the external input UP is equal to 1, no matter what the DOWN input is, the circuit operates as an UP counter and counts sequence from 0000 to 1111.
How do you convert JK FF to T FF?
Conversion of J-K Flip-Flop into T Flip-Flop:
- Step-1: Construct the characteristic table of T flip-flop and excitation table of J-K flip-flop.
- Step-2: Using K map, find the boolean expression for J and K in terms of T.
- Step-3: Construct the circuit diagram for the conversion of J-K flip-flop into T flip-flop.
What’s the maximum modulus of a 3 bit counter?
The modulus of a counter is the actual number of state’s in it’s sequence A 3 bit binary counter has a maximum modulus of 8 A four bit binary counter has a maximum modulus of 16 A modulus 12 counter must have
How is a binary counter constructed from flip flopsby?
A binary counter can be constructed from J-K flip-flopsby taking the output of one cell to the clock input of the next. The J and K inputs of each flip-flop are set to 1 to produce a toggle at each cycle of the clock input. For each two toggles of the first cell, a toggle is produced in the second cell, and so on down to the fourth cell.
How does binary counting work in a clock?
Binary Counting. For each two toggles of the first cell, a toggle is produced in the second cell, and so on down to the fourth cell. This produces a binary number equal to the number of cycles of the input clock signal. This device is sometimes called a “ripple through” counter. The same device is useful as a frequency divider.
Can a frequency counter be made from a binary counter?
Frequency Counter A frequency counter can be made from a binary counterand a decoder/display unit. In the schematic below an AND gateis used as an input device. The unknown frequency is applied to one input of the AND and sample pulses of precise time interval are applied to the other.