Hand-held data gathering terminal based on GPRS communication
A data acquisition terminal, communication technology, applied in wireless communication, electrical components, radio/induction link selection and arrangement, etc., can solve problems such as the inability to meet user data services, achieve low cost, high economic and social benefits, operation simple effect
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[0018] The following describes the embodiments of the present invention in detail with reference to the accompanying drawings:
[0019] Reference attachment figure 1 , 2 , The embodiment of the present invention includes a microprocessor (1), display module (2), infrared module (3), real clock (4), GPRS module (5), reset circuit (6), memory (7), active Crystal oscillator (8), power detection (9), keyboard detection (10), scanner interface (11), power supply module (12) and buzzer, indicator light, backlight, photodiode and system bus expansion; among which display module The port of (2) corresponds to the P0.10~P0.12 and P0.16~P0.23 ports of the microprocessor (1), and the port of the infrared communication module (3) corresponds to the RXD0, port of the microprocessor (1). TXD0 port and P0.4~P0.6 port, the port of the real clock (4) corresponds to the SCL and SDA ports of the microprocessor (1), and the port of the GPRS module (5) corresponds to the RXD0 of the microprocessor (1...
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