Pesquisa de banco de dados e facebook, twitter e orkut
Autor: Beatriz | Publicado: 2012-02-22T12:23:00-08:00

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1.Codigos de barra:

Basicamente o código é constituído de 13 dígitos (789EEEE
PPPPP D) distribuídos da seguinte maneira: os três primeiros identifica o pais
789=Brasil, EEEE é o número da empresa cadastrada na EAN Brasil, PPPPP é o
código do produto fabricado por ele e D é o dígito de controle, para que o
leitor não cometa erros no memento de identificação do código de barras. Para
que isto funcionasse muito bem era preciso um leitor eficiente. Surgiu então os
leitores de código de barras a
laser e em seguida o multi feixe a laser, para que o operador do caixa se
preocupe apenas em mostrar o código de barras para o leitor.

&nbsp;





&nbsp;2.numeros de cadastrados nas redes
sociais:



·&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
Facebook:

O Facebook sempre alardeia quantos usuários tem. O último anúncio foi na
quinta-feira, durante sua conferência anual de desenvolvedores, são 800
milhões. Em agosto, o
Facebook anunciou: temos 25 milhões de usuários brasileiros. 



·&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
Orkut:

São 85 milhões de usuários cadastrados no Orkut. O Google não divulga
resultados por países, mas o Orkut mantém uma página de estatísticas onde diz:
50,6% dos usuários são do Brasil, ou seja, algo em torno de 43 milhões.



·&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
Twitter:
Twitter
divulgou em seu próprio site o número total de usuários registrados: 175
milhões. 


O Brasil
conquistou o topo do ranking de países que mais têm cadastros&nbsp; no Twitter.Segundo dados divulgados pelo
Ibope Nielsen Online, no mês de junho 15% dos cerca de 34 milhões de
brasileiros que têm acesso à internet visitaram o serviço de microblog.


Depois do
Brasil, aparece os Estados Unidos na mesma lista, mostrando que o Twitter faz
parte de 11% da rotina dos internautas. A seguir vem o Reino Unido, com 9% de
penetração.