Description: 1, is designed to:
The use of MCS-51 microcontroller and related chips constitute a simple cash register.
2, design requirements:
System to achieve the following functions:
⑴ with a scalable digital and "+","×","=" keyboard for input.
⑵ can be recycled to achieve a single user consumption, the total amount of calculations.
⑶ a reset, single-step returns and displays the decimal expansion of functions.
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收银机.doc
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