74HC190 datashee—英版数据手册。
2016-08-26 17:20
74HC190英文手册
2016-11-02 19:59
MM54HC190/MM74HC190 SynchronousDecade Up/Down Counters with ModeControl MM54HC
2008-08-06 09:42
：需用优先编码器4532，4043RS锁存器，74HC190芯片，555定时器，74190。希望能尽快给出答案！ 并把图文发到387795191@qq.com
2010-06-24 16:28
The CD54/74HC190 are asynchronously presettable BCD decade counters, whereas the CD54/74HC
2010-08-09 22:07
HD74HC190 HD74HC191 数据表
2023-05-09 19:12
HD74HC190 HD74HC191 数据表
2023-06-27 20:33
电子发烧友网站提供《具有向下/向上模式控制的同步向上/向下计数器CD54HC190 CD74HC190 CD54HC191 CD74HC191 CD54HCT191 C
2024-05-20 10:52
74、74HC、74LS系列芯片对比，
2013-11-16 14:13
MM54HC190/MM74HC190 SynchronousDecade Up/Down Counters with ModeControl MM54HC
2008-08-06 09:43
