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- 2012-11-26
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Description: Task: The technical design of an interface of an integrated keyboard and digital electronic clock, control the clock with the keyboard, modify the time to complete the design of the hardware circuit diagram of the design process to complete the software design requirements to complete the process list: 1. Using the 8051 2. I/O expansion using the 74LS273 3. LED digital dynamic display 6 4.3* 8 keyboard 5. LED display, keyboard with real-time interrupt the scan to complete 6. using protel schematic drawing
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