最古老的计算机就是算盘。

The oldest kind of computer was the abacus.

youdao

可是，实际上，算盘是一个加法机，计算器和计算机。

But, in fact, an abacus is an adding machine, calculator, and computer.

youdao

可是，实际上，算盘是一个加法机，计算器和计算机。

But, in fact, an abacus is an adding machine, calculator, and computer.

youdao