![51 Single chip microcomputer](https://www.bifelectronic.com/2132-large_default/51-single-chip-microcomputer.jpg)
1.On-board STC89C52 MCU chip
2.On-board microcontroller reset circuit
3.Eliciting all the chip pin
4.Support ISP download program
5.Supporting supply power to DC and row needles, on-board power light