| 摘要 |
<p>A computer system is provided which can be completely reprogrammed by telephone to permit debugging or software updating. Since low-level access is possible, this system can be used for data-collection stations, for application-specific systems generally, or for other systems in which a high-level software environment is not present. The present computer system can be used with major home appliances such as washing machines, dryers, microwave ovens which contain microcontrollers. The computer system comprises first and second microcontrollers (110, 120). The first or target microcontroller (110) further includes memory (112) and clock/calendar (114). Second microcontroller (120) includes control logic (120A) and a modem controller (120B). The USART (130) is used for serial data transfers from the target microcontroller (110) when communication is established over the telephone lines.</p> |
