Detail specification for electronic component . semiconductor integrated circuit . type ch2021 4 - bit up down synchronous binary counter dual clock 電子元器件詳細(xì)規(guī)范.半導(dǎo)體集成電路ch2021型4位二進制同步加減計數(shù)器
Detail specification for electronic components . semiconductor integrated circuit ct54161 ct74161 4 - bit synchronous binary counter direct clear 電子元器件詳細(xì)規(guī)范.半導(dǎo)體集成電路ct54161 ct74161型4位二進制同步計數(shù)器異步清除