Document is to read and write I2C bus test procedures will JP6 jumper shorted, the use of an external 22.1184MHz crystal .* functions: the definition of 0 ~ 9 keys for the numeric keys, A ~ F for the function keys. A key press can be from 0 to 9 number keys,* from the zero address of the beginning of storage the key, and send digital tube LED display of the keys. By the B key, from zero to the beginning of* the site to read data values, and send digital tube LED display. Once per second read speed. By the C key after the* cessation of any operation.

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