[Xiamen Electronic Scale] Refutation of Rumors | Is there anything fishy about electronic scales? The experimental results are as follows

A recent news on my social media has caught the attention of netizens. It is reported that when weighing things with an electronic scale, adding a decimal point and zero after the integer when entering the unit price, that is, adding a ". 0", the displayed total price is significantly different from the total price when entering the integer.

This news states that some citizens are buying meat at the market, with a unit price of 15 yuan/jin. The vendors enter "30" (unit: yuan/kilogram) in the unit price column on the electronic scale, and the displayed price is 19 yuan. At this point, the consumer spoke up and said, 'Boss, please help me enter an extra 0 in the price column!' The boss was unhappy, but still entered the unit price as' 30.0 ', and the displayed price was 18.4 yuan.

Everyone present was stunned, it turned out that there was still this one, "it wrote.

Subsequently, this also uses a fish with a unit price of 22 yuan/kg as an example to explain the trickery involved.

Image/Network

Generally, there are 4 digits available for input in the input field of an electronic scale. When an integer is entered, the electronic scale will automatically display the price of the integer. For example, even if the actual total price is 8.4 yuan, the displayed price will still be "9". This is how the electronic scale system is set up.

If ". 0" is entered after the integer in the unit price column, the price column will display one decimal place, and the total price will become 8.4 yuan. If ". 00" is entered after the integer, the price column will display 2 decimal places, and the total price may become "8.33" yuan.

In the future, when buying things and weighing them with an electronic scale, if the boss has determined the unit price, why not say 'help me add an extra zero to the unit price'? Don't worry, it's still quite a lot of money over the years! "Said Zhong. Many housewives have reposted this message on their social media.

　　experiment·Whether the price of scattered stalls remains unchanged after entering the decimal point

To verify the rumors circulating online, the reporter visited multiple supermarkets and free markets.

The survey found that there are generally two types of electronic scales used in the market, one is tray type and the other is desktop. The picture of the middle configuration is a tray style electronic scale.

The reporter randomly selected a fruit shop for testing. The shop uses a tray style electronic scale, which has a similar operating interface to the electronic scale used in China. There are 4 digits in the unit price input column that can be entered, and there is also a decimal point on the operating keyboard.

Image/Network

The reporter purchased some fruits and weighed them. Following the steps online, the shop owner entered the unit price of "10" in the electronic scale unit price column. After entering, the unit price column displayed "10.00" and the total price displayed "9.00".

For fruits of the same weight, when the reporter entered "10.0" in the unit price column, the unit price column still displayed "10.00", and the total price "9.00" remained unchanged from before.

Next, the reporter entered the unit price of "6" again, and the total price column showed "9.12". The reporter changed the unit price to "6.0" and "6.00", while the electronic scale showed the same unit price, and the total price was also 9.12 yuan.