Microcontroller Learning Board, Microchip PIC Board, Computer Communication Interface 9.2 * 7.2 * 1.7Cm for Lcd1602, Lcd12864 Rs232 Communication Interface

Standard RS232 communication interface, microcontroller board and computer communication interface. Standard RS232 communication interface, microcontroller board and computer communication interface. Onboard 4M crystal oscillator, the socket crystal frequency can be replaced at any time. 8 LEDs are connected to the RD port. When the J3 is plugged in, the LED is enabled. J3 is unplugged and the RD port is completely released. The 4-bit independent keyboard is connected to RB0 RB1 RB2 RB3.