无需记录销往单位，无需填制销售货凭证，在计算机管理系统中为了分类统计客户群，可对某类客户做一标识，并且可由打印机打印出销售小票-No record of units sold, sales of goods without填制certificate, in the computer management system in order to keep separate statistics on customer base, can make one particular type of customer identification, and by the printer print out the sale of small ticket