Baby description:

All the 1.40 pins are drawn out.

2. Classic 51 system, which saves the trouble of welding

3. Crystal vibration: 11.0592M

4. Support chip: STC89C52 stc52 stc5a60s2 stc11/10x series AT89S52 and chip compatible with the above chip

5. A power switch, convenient experiment.

6. Dc-005 power source seat (supporting seat is 5.5* 2.1)

7. External expansion 2 VCC,GND, as shown in the middle row of pins.

8. Interior design of parts. Save space.

9. Board size: 6.5cm*3.1cm