Due to the nature of the sellingsystem, this software besides of controlling the prices in every moment, has to meet the following requirements:
� Be a solid system
If we take into account that the final users of the systems will be people with none or very little computer knowledgdement, and the atmosphere is hostile for a computer (smoke, changes of temperature, rough handling, etc...), lot of humane mistakes are made at the time of using the program.
This is not admissible because a 'jam' of the application means to repeat to initialise the system, losing thereby the actual prices of sale and the dynamics, which characterise the stock exchange.
Therefore we have put a lot of emphasis on the control of all possible mistakes and in a few cases autorectife them, avoiding that under whatever circumstance the system could �jam�. A backup for these statements are that in 5 years of functioning in La Bolsa there where no 'jams' whatsoever, nor in Dow Jones, Barcelona (which is still owned by us) or Dow Jones in Vilafranca del Penedes, nor in discotheque Principal in Areyns del Mar. They all use our system, each with their own characteristics.
� Be a flexible system
It is permitted that in every moment you can modify whatever data of a product, like add or eliminate one, without causing an effect at the actual prices of the program.
Also you can modify a list of parameters which control the functioning of the program.
� File sales in memory
It is put into proper files all operations realised for posterior comprobations, optimalisations and tax revisions.
Concrete it is filed:
- sold products
- quantity sold
- price of sale
- time and day of the sale
Also it is controlled all the quantities consumed (not only the sold ones), which are data's interesting for the owner and for posterior determination of the real cost.
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