74hct4017 - 约翰逊十进制计数器，带10个解码输出
Counter IC Counter, Decade 1 Element 10 Bit Positive, Negative 16-DIP
得捷: IC JOHNSON DECADE COUNTER 16-DIP
艾睿: Counter/Divider Single 5-Bit Decade UP 16-Pin PDIP Bulk
Win Source: IC JOHNSON DECADE COUNTER 16-DIP
NXP 恩智浦