Handheld data acquiring terminal
A data acquisition terminal and port technology, which is applied in the direction of instruments, sensing record carriers, computer parts, etc., can solve the problems of high configuration conditions, difficult operation and high price, and achieve high economic and social benefits, simple operation and low cost. Effect
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[0017] Below in conjunction with accompanying drawing, embodiment of the present invention is described in detail:
[0018] Reference attached figure 1 , 2. The embodiment of the present invention includes a microprocessor 1, a display module 2, an infrared communication module 3, a real clock 4, a JTAG interface 5, a reset circuit 6, a memory 7, an active crystal oscillator 8, a power detection 9, a keyboard detection 10, Scanner interface 11, power supply module 12, buzzer, indicator light, backlight, photosensitive diode and system bus expansion; where the port of display module 2 is connected to P0.10-P0.12 and P0.16 of microprocessor 1 ~P0.23 port, the port of the infrared communication module 3 corresponds to the RXD0, TXD0 port and P0.4~P0.6 port connected to the microprocessor 1, the port of the real clock 4 corresponds to the SCL and SDA port connected to the microprocessor 1, The port of JTAG interface 5 corresponds to the TCK, TMS, TDI, TRST, and TDO ports connecte...
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