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    • 7. 发明授权
    • Method of modifying programs stored in cash register
    • 修改储存在收银机中的程序的方法
    • US4811219A
    • 1989-03-07
    • US117907
    • 1987-11-03
    • Ryozo ToujiSouichi Ohnishi
    • Ryozo ToujiSouichi Ohnishi
    • B41J5/30G07G1/12G06F15/22G06F9/22
    • G06Q30/04G07G1/12
    • An electronic cash register (ECR) comprising a memory containing addresses identical to those of the mask ROM that permanently stores a variety of trade processing programs and stores data indicating whether any change should be applied to such programs stored in those addresses. Other memories are provided for storing the memory bank data memorizing the addresses of the modified programs among such programs stored in the mask ROM and the modified programs and also storing the modified programs themselves. The electronic cash register embodied by the present invention permits the system to easily and securely write and store a variety of data necessary for changing programs stored in the mask ROM in those memories mentioned above via an input provided for inputting and processing a variety of trading data.
    • 一种电子收银机(ECR),包括一个存储器,该存储器含有与永久存储各种交易处理程序的掩模ROM的地址相同的地址,并且存储指示是否应该将任何改变应用于存储在这些地址中的这些程序的数据。 提供了其他存储器,用于存储存储在掩模ROM和修改的程序中的这些程序之间的修改的程序的地址的存储体数据,并且还存储修改的程序本身。 由本发明实施的电子收款机允许系统容易且安全地写入和存储通过用于输入和处理各种交易数据的输入来改变存储在上述存储器中的那些存储器中存储在掩模ROM中的程序所需的各种数据 。