Arduino Mega， the core of ATmega2560 micro controller development board， has 54 group digitals I/O input / output end， 16 groups analog input， 4 groups UART (hardware serial ports)， uses 16MHz crystal oscillator， can download program without other external burn write device through USB with bootloader

Main Features:
Digital I/O Pins: 54 (of which 14 provide PWM output)
DC Current per I/O Pin: 40mA
DC Current for 3.3V Pin: 50mA
Flash Memory: 256KB， of which 4KB used by bootloader
SRAM: 8KB
EEPROM: 4KB
Clock Speed: 16MHz

Packing List:
1 x Motherboard
1 x Expansion board
1 x Bread board
65 x Dupont cables
15 x LEDs
5 x 1K resistances
5 x 10K resistances
5 x 220 resistances
1 x USB cable (53cm)

Frequently Asked Questions:
Q1. Why are these called "Arduino Compatible"?
A1. The Arduino group demanded us to remove their logos and rename these products so that they do not lead customers to believe they are the same units sold by Arduino
Q2. Are these 100% compatible with the "normal" Arduino's?
A2. Yes， they really are completely compatible with "normal" Arduino's. Build quality looks the same and everything (studio， library， tools， etc) just works