上拉电阻造句怎么写

P 2口连接8个一端接地的按键作为输入，当然也需要连接8只10K的电阻至电源作为上拉电阻。

所述阻抗匹配电路包括第一下拉电阻单元、第一上拉电阻单元和码产生单元。

The old man's stone beach, the sea sand is very delicate, I used plastic bags to pack a little fine sand of the old man's stone beach in Qingdao.