OK, for this post, I had some help from my aunt. She's some sort of an expert when it comes to these products, since she was once a cashier in a department store. What I am going to tell you about is this cash register--the 200 Heavy Duty Cash Management System.
With the use of the 200 Heavy Duty Cash Management System, many paperworks become easier--like assorting sales of every department, and inventory of items purchased. There is no need to compute taxable items for it is readily given (automatically computed). For more specific details, just visit our products page.
I remember that my aunt used to tell us stories about her cashiering days. That was in 1980. They also had a cash register but the cash register during those days were a lot LOT different. The evolution of the cash register (from 1980 to the present) is simply amazing--at least in my aunt's opinion. According to her, the register she was able to use before was really big (read: big) and a cashier always had a chance of having a 'short' (when the cash inside the chest does not equal the amount in the computation) because you have to manually compute how much will be the change. They're a little bit 'soundy' when in use, too. Unlike this modernized cash register, almost everything you need is being supplied to. 
She also told us that, before, they used sales invoices which serve as the customers' official receipt. That is why the sales clerks were responsible for the computation of purchased items--and again, had a big chance of having a 'short'. Nowadays, only sales order forms are being accomplished and forwarded to the cashier, together with the item purchased. Thus, discrepancies are minimal.