used in rotary shaft encoder
Synchronous motors are those that run only at Synchronous speed ie.. constant speed.
JK flip flop are synchronous ONLY when the rise or the fall edge of the clock will transfer the data to the outputs
Granville T. Woods
Synchronous motor
ADVANTAGES OF IDS
Synchronous
Yes, the 74LS893 is a synchronous binary counter. In a synchronous counter, all flip-flops are clocked simultaneously by a common clock signal, allowing for predictable timing and operation. This design enables the counter to count in a coordinated manner, reducing propagation delays associated with asynchronous counters.
A synchronous counter is not referred to as a ripple counter. They are two different things. The ripple counter uses the output of each stage to trigger the input of the next stage, resulting in propagation delay between stages. The synchronous counter, on the other hand clocks all stages on the same clock edge, making them all change at relatively the same time.
It is used in variety of applications such as... · Machine Tools such as a ball mill · Motor generator sets · Synchronous clocks · Timing devices · Synchronous condensers to condition electrical power · Record players · Robotics
Basically it is a Synchronous Counter. You can google for further information.
1. Easier to design 2. No propagation delay Actually the second one is the most important reason. In designing circuits that work at high clock rates, ripples will result in errors so synchronization is very very important.
A ripple counter is a counter in which state transitions of one or more flip flops are triggered by the outputs of other flip flops in the circuit. If all flip flops in the counter are triggered by a common clock pulse, then the counter is called a "synchronous counter". a ripple counter is a counter that will ripple through the information sequentialy. .
http://ftp.csci.csusb.edu/schubert/tutorials/csci310/f03/dw4bit.pdf
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Binary Counter
Synchronous counters have several advantages over ripple counters, primarily in speed and reliability. In synchronous counters, all flip-flops are triggered simultaneously by a common clock pulse, which eliminates the propagation delay seen in ripple counters where each flip-flop is triggered by the output of the previous one. This results in faster counting speeds and reduces the risk of erroneous states during transitions. Additionally, synchronous counters are generally easier to design for higher bit widths due to their predictable timing behavior.
a digital countdown timer is simply a digital synchronous counter consisting of registers and flip flops example :to count the number from 0 to 15 we require a four bit synchronous counter which will pass to sixteen stages continuously with shifting from one stage to other after every clock pulse and the cycle continues