- #1
aruna1
- 111
- 0
Homework Statement
guys i have given following question
"Brief out how you realize a 4 bit asynchronous up counter using flip flops."
my english is not good so please explain this question to me (in simple)
thankswildman said:The third illustration from the top on this web page will do the trick:
http://www.allaboutcircuits.com/vol_4/chpt_11/3.html
A 4-bit asynchronous up counter is a digital circuit that counts from 0 to 15 using four flip flops. Each flip flop represents one bit of the counter, and the count increases by one every time the circuit receives a clock pulse.
As the name suggests, a 4-bit asynchronous up counter requires four flip flops to represent the four bits of the counter. This allows for a total of 16 different states, from 0000 (0) to 1111 (15).
A synchronous counter uses a common clock signal to synchronize the count, while an asynchronous counter does not rely on a clock signal. Instead, an asynchronous counter uses the output of a flip flop to trigger the next flip flop in the sequence.
To design a 4-bit asynchronous up counter, you will need four flip flops, four inputs for the flip flops, and four outputs for the counter. The outputs of the first three flip flops are connected to the inputs of the next flip flop in the sequence, and the input of the first flip flop is connected to the clock signal. The outputs of the flip flops represent the four bits of the counter.
A 4-bit asynchronous up counter is commonly used in digital circuits to keep track of the number of events or signals that occur. It can also be used as a simple binary counter for mathematical operations, such as addition or subtraction.