An open collector/open drain is a common type of output found on many integrated circuits (IC) . Instead of outputting a signal of a specific voltage or current, the output signal is applied to the base of an internal NPN transistor whose collector is externalized (open) on a pin of the IC.
There were two categories for clothing in the Han Dynasty. They were either the Shenyi (or long coat developed in the Western Han Dynasty) or the Yijin (which makes up the front of the jacket/gown and can be made up of one or two pieces). Itâs been said though that a few people wore the Shenyi during the Eastern Han Dynasty.
1)Upper Class: People in the upper class wore clothing decorated with feathers and decorative needlework patterns on to show their status. They also carried fans made of feathers. 2) Ordinary People: It was against the law for ordinary people to wear feathers. It was also against the law for ordinary people to carry fans.