The advantage is that you might not need any externalRAM at all if you can get away with a very small amount on chip.
其好处是，如果您可以在芯片上拥有少量内存，就可能不再需要任何外部RAM。
2
A brief description is made in regard to internal and externalRAM data - holding on power - off of single chip computer.
本文就单片机系统片内和片外ram的数据的掉电保持做了简单介绍。
3
Most of the valve is sealed using force, that the valve is closed, forced to rely on externalram pressure to the valve seat to ensure the sealing surface of the seal.