型号：DM74LS191
厂商：FAIRCHILD[Fairchild Semiconductor]
大小：72.73 Kbytes
页数：共6页
功能：Synchronous 4-Bit Up/Down Counter with Mode Control
厂商：NSC[National Semiconductor]
大小：174.74 Kbytes
页数：共8页
功能：Synchronous 4-Bit Up/Down Counters with Mode Control
型号：DM74LS191M
型号：DM74LS191N
