40P Lock 51 Mcu Module Minimum System Board Very Small Development Board Car Remote Control DIY Accessories Essential 5pcs High Quality: New High Quality. High-quality materials: Made of high-quality materials, safe and durable, high-temperature resistant. Low power consumption: easy to control, more stable and high efficiency. Easy to install: small size, more stable performance and simpler installation. Wide application: it can be used in the core of the product and development and learning, which can shorten the product development cycle, and is suitable for course design and electronic design competition. Compatible with AT series, STC MCU at the same timeMCU 40 io pinout With self-lock switch, it is convenient to switch the power supply With LED power indicator3.5mm x 1.3mm external power supply Pin head leads to 3 VCC and GND, which can supply input or output P0 pull-up resistor has been pulled up With rc circuit and manual reset Support isp download and serial downloader Integrated ISP 10p download interface, convenient to download at89s52 MCU. The bottom of the crystal is a circular socket, which is convenient to replace the crystalSupport two power input methods: DC power socket (the bracket supports 3.5mm x 1.3mm) and one row of pins (next to the power switch) With programmable LED, LED experiment can be done 40P locking socket, easy to microcomputer single-circuit, batch processing, eliminating the problem of manual weldingColor: Green Material: abs + metal Size: 90x40x18mm Package Content: 5x51 Mcu Board Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement error is +/- 1-3cm.