型号：DM74LS190

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：DM74LS190M

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：DM74LS190N

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