The ATmega328 has only 2KB of RAM ... The 16u2 is normally used as the Arduino Uno’s USB interface. The only external hardware needed is a single 120 ohm resistor. The original Apples had ...

The Arduino Nano and Uno are equipped with very similar processors (the chip that essentially serves as the brain of the board). The Nano features an ATmega328, while the Uno sports an ATmega328P.

Microcontroller demo boards such as the Arduino UNO are ubiquitous on Hackaday as ... His notes show he saw the barest way to operate an ATMega328, built it, tested, and moved on to the power ...

But even after eliminating the Uno from your selection, you'll still be left with a wide array of Arduino boards to choose ... The Nano runs on an ATmega328 with a clock speed of 16 MHz, flash ...