• 8051 Microcontroller Development board
• 40 pin with P0 port 10K Pull up
• Crystal: 11.0592M for accurate timing
• Power switch and indicator light for easy use
• DC2.1 power seat for convenient power supply
• 3 Group Expansion Power Interface for external expansion
• Reset circuit for stable performance
• PCB size: 69 * 32MM
1.40 pin all leads, P0 port 10K Pull up increase host exclusion
2. Crystal: 11.0592M
3. Power switch and power indicator light, easy to experiment
4. DC2.1 power seat (hole 5.5MM, 2.1MM core )
5. The external expansion 3 Group Expansion Power Interface
6, reset circuit
7, PCB size of about: 69 * 32MM