DPYafgd[LEDgn][LEDgn]cdecgebfbDPYa1234567+5vLT220ΩBI/RBORBIDC525350515253abcdefgLTBI/RBOAVssRBIDCBAVss74LS4774LS47220ΩB5051GND505152535051521234567abcdefgGND53B/DCO54B/DU/D54J1J2J3J4PECPCLVssRLEDYLEDGLEDRLEDYLEDGLEDSGNDJ1J2J3J4PECPCLVssCOCD4029U/DHEADER 3CD4029SGND11&&1&&计数器信号输出>=1&R&Y&GGYB8B7B6B5B4B3B2B147K74LS245A1A2A3A4A5A6A7A8VssENB8B7B6B5B4B3B2B1Q4+5VB/D\\CD4029U/D\\CPCI/PE+5Q3Q2Q1A1A2A3A4A5A6A7A8Vss8415 16
Q2\\Q1\\Q2Q111D?EN74LS245D?YR/GSGND+5VSGNDR+5V秒脉冲信号5K39K762NE55531秒脉冲信号SGND0.01uF10uF计数器信号输入SGND10 附加交通灯整体原理图原理图
SGND交通灯控制电路