Thread card -- warp and weft yarns are all ply yarns    1.Thread CARDS belong to khaki fabric. If warp is thread and weft is yarn, it is called half thread CARDS. If the warp and weft are threads instead of yarns, it is called full line card. Half line card and full line cardtwillThey're all going in the right direction. This is theYarn cardThe biggest difference. All cotton thread CARDS and yarn CARDS are similar in style, with uniform and clean cloth surface, plain and soft, stable setting, moisture absorption and wear resistance and other characteristics. Most of them are selected for casual pants. Especially after the treatment of non-ironing, soft and comfortable, non-crease features are more prominent, making them the preferred fabric for leisure type long shorts at present.      2.Line CARDS for switches,The routerA device interface between the access line of or other network device and the access device. Digital and analog wire CARDS with a variety of rates can be used for connectioncableorOptical fiberThe line. Digital line card mainly provides packet forwarding, ping response, packet sharding and other functions for data network. Line card mainly focuses on the following aspects:      3.Congestion control such as first in first out (FIFO), MDRR(Modified Deficit Round Robin), weighted randomised early detection (WREDOther features :Weighted Random Early Detection) such as Access Lists (ACLs:Access Lists) promised Access rate (The CARCommitted Access Rate) and data flow statistics. Each digital packet wire card can be divided into three main parts:      4.Physical Layer Interface Module -- A hardware Module used to terminate Physical connections (associated media, asynchronous transfer mode ATM,SONET Data packet & LT; POS: Packet - over - SONET> Ethernet) Switching Engine - This forwarding Engine presupplies packets for the transmission from the Switching Fabric to the destination LC. Mainly responsible for packet search, rewrite, buffering and congestion control operations. Switching Interface - The Switching Interface ASIC(FIA) provides packets in advance for the transmission from the Switching Fabric to the LC on the destination. It is mainly responsible for exchange authorization request, exchange queuing, multicast replication and other operations.