| 摘要 |
The automatic jig for checking manufacturing of a printed circuit board(PCB) using a microcomputer comprises a power supply circuit(20) for supplying a checking voltage to a checked PCB by using common AC power, a key input circuit(30) for generating key commands through a predetermined switch, a display circuit(40) for controlling the lighting of each light emitting diodes, an output circuit(50) for expanding the output data of a microcomputer(10) to a predetermined shape through data expansion ICs(IC1,IC2) to transmit the expanded data to the checked PCB, an input circuit(60) for inputting the checked output signal of the checked PCB to a predetermined port of the microcomputer(10) via multiplexers(MUX1~MUX6), the microcomputer(10) for controlling the output circuit(50) and the input circuit(60) and for outputting the output data to the display circuit(40), and a buzzer driving circuit(70) driven by the driving output of the microcomputer(10).
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