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Counters are specially designed synchronous sequential circuits, in which , the state of the counter is equal to the count held in the circuit by the flip flops. Counters calculate or note down the number that how many times an event occurred.
Counters are the crucial hard ware components, and are defined as “The digital circuit which is used to count the number of pulses”. Counters are well known to us as “Timers”. Counter circuits are the best example for the flip flop applications. Counters are designed by grouping of flip flops and applying a single clock signal to them. In simple words, the counters are those, which have the group of storage elements like flip flops to hold the count.Cutting corners: The DEA's program to track Americans who bought money-counting machines ran from 2008 until 2013 and reportedly collected tens of thousands of records. An incorrectly redacted report shows how the agency hid the program from judicial oversight since they knew its legality was questionable.Count-by-weight Money Counting Machines have come a long way since their introduction around 40 years ago.
Flashback to 1979: After standing in line at the bank one day, Edgar Biss and other patrons patiently waited while the teller counted a pile of bills, lost count, and started over. As time ticked by and the line didn’t budge, Edgar thought, “There has to be a better, faster, more accurate way to count cash.” An engineer by trade, Edgar created the first count-by-weight Money Counting Machine – the Tellermate.If you have looked at the most recent $20 bills from the U.S. Bureau of Engraving and Printing, you know that they have an army of security features designed to make counterfeiting more difficult. The most obvious of these features is the "20" in the lower right corner written in color-change ink. There's also a security strip embedded in the paper to the left of Andrew Jackson that is visible if you hold the bill up to the light. Other new features include micro-writing, a watermark and very closely spaced lines (for example, behind Jackson's face) that are harder for a counterfeiter to reproduce.
All of these features are nice, but no store clerk is going to stand and hold each $20 bill he or she receives up to the light to check for a security strip! It takes too long and it is not a flattering pose to strike.Many people accumulate pocket change over time. That change finds its way into a coin jar or another container and builds up. One day, you'll look at the container and realize that it's accrued quite a bit of money and will want to do something with it.
The catch, of course, is that a big pile of change is a hassle to deal with. Paying for a purchase with a mountain of coins is time-consuming and potentially annoying to the people around you. Some businesses will accept bulk change and convert it into dollars for you, but they charge a fee.