| 摘要 |
The method uses a portable box (1) which has a microprocessor with a keyboard (3,3',4), a memory and a screen, typically liquid crystal. The memory contains the rates of exchange between the various units of money and may be read only or writable. The keyboard comprises a section similar to that on a pocket calculator (3') which allows any sum of money to be displayed on the screen (2). Currency keys (4) register the monetary unit used and a further key (5) which is shaped to be geometrically distinct effects the conversion to Euros. Alternatively any sum in Euros may be converted to national units.
|
