What is an add -machine?

The additional machine is a machine designed to perform simple mathematical operations such as adding, subtraction, multiplication and dividing numbers, especially the numbers representing currency units, in large or small groups. They are usually configured for use in office or business settings with a simple keyboard of numbers from 0 to 9 and the key to basic mathematical functions. The additional machine will often have an integral mechanism for printing all calculations on small paper. Older adding machines processed by purely mechanical means, but newer machines of this type are generally electronic digital devices.

The first mechanical calculator, the predecessor of the addition of machines, was invented by Blaise Pascal in the 17th century. Further improvements were implemented by other inventors in the next two centuries until the first widely available commercial additional machine was introduced at the end of the 19th century. Early adding machines were very complex and required Crank or lever to be pulled after KaŽdé surgery, which would result in the display of the overall display. The next operation was then covered and pulled out the handle or lever again. The first additional machine with integral operations for printing operations and their results that were performed was introduced in 1872.

Accountants and accountants use the addition of machines to facilitate work. Adding machines reduces the error option if the numbers are correctly entered, which allows the operator to quickly handle a large number of numbers. These devices have been common in almost every business for many decades, and they are still in one respect, as a normal cash register is one type of machine adding.

6terparts. This crossing began at 60 and 70 years. Accountants and accountants still use the addition of machines in 2011, although their use becomes less common, as more and more of their functions are taking over accounting software and other computer programs. Today is available on the InternetSoftware adding machines that mimic the functions of older traditional adding machines and even allow users to download and print all operations.