© 2022 EasyEDA Some rights reserved
Editor Version
×
Standard
1.Easy to use and quick to get started
2.The process supports design scales of 300 devices or 1000 pads
3.Supports simple circuit simulation
4.For students, teachers, creators
Profession
1.Brand new interactions and interfaces
2.Smooth support for design sizes of over 30,000 devices or 100,000 pads
3.More rigorous design constraints, more standardized processes
4.For enterprises, more professional users
Std EditionRetro CMOS Clock (20 ICs)
Profile：A retro LED CMOS clock to give you that nostalgic feeling.
License: GPL 3.0
Description
This clock wouldn't have been out of place in 1981. It is fairly typical of the kind of clocks that hobbyists were building. The circuit consists of a set of counters and LED segment drivers. There is a small amount of logic to divide down the value of the counters to hours, minutes and seconds. A couple of buttons allow you to adjust the hours and minutes to set the time.
I have written an article about this project and uploaded it to the Hackaday website. Visit: CMOS Clock Hackaday Project Page
Documents
Sheet_1
Open in editor
Sheet_2
Open in editor
Sheet_3
Open in editor
Sheet_4
Open in editor
PCB_Retro CMOS Clock (20 ICs)
Open in editor| ID | Name | Designator | Footprint | Quantity |
|---|---|---|---|---|
| 1 | 7-SEG-SC56-11 | LED3,LED1,LED4,LED6,LED5,LED7 | 7-SEG-SC56 | 6 |
| 2 | CD4060BE | U2,U3 | DIP-16_L20.0-W6.4-P2.54-LS7.6-BL | 2 |
| 3 | 74HC04 | U8,U18 | DIL14 | 2 |
| 4 | 7V - 12V DC Power In | JP1 | POWER_JACK_PTH | 1 |
| 5 | CD4026BE | U10,U5,U11,U13,U12,U16 | DIP-16_L20.3-W10.2-P2.54-LS10.2-BL | 6 |
| 6 | 74HC08 | U6,U7,U14,U15,U17,U19,U20,U22 | PDIP-14 | 8 |
| 7 | 330K Ohm | R1 | R_AXIAL-0.3 | 1 |
| 8 | 220 Ohm | R16,R8,R17,R37,R24,R44 | R_AXIAL-0.3 | 6 |
| 9 | 220 | R15,R14,R13,R12,R11,R10,R2,R3,R4,R5,R6,R7,R23,R22,R21,R20,R19,R18,R31,R32,R33,R34,R35,R36,R25,R26,R27,R28,R29,R30,R38,R39,R40,R41,R42,R43 | R_AXIAL-0.3 | 36 |
| 10 | CD4093 | U9 | DIP14 | 1 |
| 11 | Crystal 32,768 Hertz | U4 | CRYSTAL 32768 | 1 |
| 12 | 0.1uF | C7,C8,C9,C2,C10,C12,C11,C15 | RAD-0.1 | 8 |
| 13 | 100 uF | C1 | CAP-D3.0×F1.5 | 1 |
| 14 | 74HC365 | U21 | 74HC193 | 1 |
| 15 | LED-5mm | LED11,LED10,LED9,LED8 | LED-TH_BD5.0_RED | 4 |
| 16 | 1K | R48,R47,R46,R45 | R_AXIAL-0.3 | 4 |
| 17 | 10k | R49,R51 | R_AXIAL-0.3 | 2 |
| 18 | button6*6*8.5 | MINUTES,HOURS | KEY-TH_4P-L6.0-W6.0-P4.50 | 2 |
Unfold
Project Members