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About UNO R3 ATmega328P development board: - 100% compatible with program£¬ expansion shields£¬ IDE of Arduino UNO R3 - Can be directly programmed with the Mini USB cable. - Using Micro USB interface£¬ compatible with more expansion boards. - USB to serial chip (CH340) supports win7 / win8 32bits£¬ 64bits£¬ Linux. - Supports ISP download. - Operating Voltage: 5 V. - Digital I/O Pins: 14 (6 of which provide PWM output). - Analog Input Pins: 6. - Flash Memory: 32 KB (2 KB of which is used by boot loader). - SRAM: 2 KB. - EEPROM: 1 KB. - Clock Speed: 16 MHz. About LCD Kaypad Shield: - Compatibility: Compatible with Arduino UNO R3£¬ Arduino Mega2560 - Display Type: 2 lines of 16 characters LCD - Backlight Color: Blue - Char Color: White - Contrast Adjustment: Potentiometer - Display Size: 2.6 inches - Power Supply: 5V - Application: MP3 player£¬ Thermometer£¬ Instrument