1, can by the chip's link to the computer USB, USB port can read hang TF card or the content of the SD card, as a card reader 2, complete serial port ...
8M/16M/32M/64M 1, support the sampling rate (KHz) : 8/11.025/12/16/22 05/24/32/44.1/48 2, 24 bits DAC output, support 90 db dynamic range, support 85 ...