Multifunction portable scales calculator - "The Assistant" buyer Print E-mail
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Written by Юрий Ружинский   
Wednesday, 02 April 2008
Transferred via translate.google.com 

I quite often have to work to weigh the various chemicals and reagents with relatively high accuracy (1-5 gr.). In doing so, I use normal household electronic scales firm TEFAL «Ovelys» to the LCD panel - a simple to use, reliable and very accurate. One significant drawback - a decent price of 230 UAH. 

I would like to create the type of household weights TEFAL steelyard (kantyr), combined with a calculator. 
That would be an assistant buyer, hurrying to the store or on the market, because we all know that the problem of false weight of buyers (of course, to the seller!) Existed at all times. 
And so it will be possible operational control over the welfare of their own «gamantsya». Outwardly steelyard greatly resembles an ordinary calculator, but the bottom has a hook for hanging the package with the goods, and on top - a pen for holding on steelyard weight of the goods. Having come to the market, purchases by clicking on «ON.», Located on the handle, the device includes meals. Then, clinging to the hook package (bags, packaging), and click the button «OPL.» Reset tare. Further, the package is removed from the hook, it is loaded and re-production is clinging to the hook already for weighing. 
On the LCD automatically shows the mass of the purchase in a range 
from 0 to 5 kg up to a 5 gr. It is necessary to keep steelyard as can be fixed, or even better - to hang or mount it on the shelves seller (in order to avoid oscillatory loads tenzodatchiki). 
Next, we calculate the cost of production by pressing certain buttons, eg: «X», «3», «,», «5», which means «a lot» multiplied by 3.5 UAH / kg. After pressing the button «=», we get the cost of production. 
If multiple purchases, the cost of initial purchase, we stored in the «T», and repeat the above operation, a sum at the end of the data: «+», «A», «+», «A» ... «=». As an option, You can suggest the following operation: if you want to check the seller's honesty, who called the final price (with a single purchase, without the «P») of the product, we are entering a value product, divide it «:» on price (UAH / kg) and suspended goods steelyard hook. 
If the actual weight of the goods corresponds with the calculated mathematically or above (+, - 10-15 gr., Which includes the weight of bag - the most common types of packaging market), the distributed musical melody, 
n-r: «Touche». If the weight of the goods is much lower (20-30 gr. And more), it starts to whine eloquently Police sirena.Rynochnye traders (as well as the majority of customers) - the people a simple and loving «Free submission». Therefore, various musical «improvisation» will be seen very clearly and with great joy that will ultimately help improve the culture of the relationship between buyer and seller. 
The real value of the electric steelyard in which it will buy - within 20-30 grn. 
Power - 2 AA. 
Manufacturer - China. 
Possible replacement of the LCD panels on the LED (luminous in the twilight) 
as well as production of cheaper versions to 2,5-3 kg of goods. 


   / "TRAKTAT the reduction of entropy, vol II, issue number 8 /  
 

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