电子CAD课程设计报告(9)

电子CAD课程设计报告

U19B 4518 计数电路.Sch U20 4060 秒脉冲电路.Sch U21A 74LS74 秒脉冲电路.Sch U41A 4012 报时电路.Sch 2、网络表 [ C1 rad0.3 22pF ] [ C2

RAD0.3 50pF ] [ DS1 DIP8

DPY_7-SEG ] [ DS2 DIP8

DPY_7-SEG ] [ DS3 DIP8

DPY_7-SEG ] [ DS4 DIP8

DPY_7-SEG ] [ DS5 DIP8

DPY_7-SE

G ] [ DS6 DIP8

DPY_7-SEG ] [ LS1 RAD0.3 SPEAKER ] [ Q1 TO-18 NPN ] [ R1

axial0.5 2kOhm ] [ R2

axial0.5 2kOhm ] [ R3

axial0.5 2kOhm ] [ R4

axial0.5 2k0hm ]

[ R5

axial0.5 10M0hm ] [ RP1 DIP14 200Ohm-7 ] [ RP2 DIP14 200Ohm-7 ] [ RP3 DIP14 200Ohm-7 ] [ RP4 DIP14 200Ohm-7 ] [ RP5 DIP14 200Ohm-7 ] [ RP6 DIP14 200Ohm-7 ] [ S1

RAD0.3

SW-PB ] [ S2

RAD0.3 SW-PB ] [ S3

RAD0.3 SW-PB ] [ U1 DIP14 74LS74 ] [ U2 DIP14 4069 ] [ U3 DIP14 4011 ] [ U4 DIP14 4011 ] [ U5 DIP14 4011 ] [

U6 DIP16 4511 ] [ U7 DIP16 4511 ] [ U8 DIP16 4511 ] [ U9 DIP16 4511 ] [ U10 DIP16 4511 ] [ U11 DIP16 4511 ] [ U12 DIP14 4023 ] [ U13 DIP14 4069

] [ U14 DIP14 4012 ] [ U15 DIP14 4011 ] [ U16 DIP14 4011 ] [ U17 DIP16 4518 ] [ U18 DIP16 4518 ] [ U19 DIP16 4518 ] [ U20 DIP16 4060 ] [ U21