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Step 1: Circuit

Step 2: Capture

Step 3: Simulator & .Hex File

Step 4: PCB Layout

Note:

- 1 AT89S52 or AT89C52 - 4 IC 74HC573 - 1 CMOS baterry - 1 DS1307 - 4 LED 7seg 4digit - 8 A1013 - 1 Respack 8 - Crystal 12MHz - 2 Capacitor 33pF - 2 Capacitor 10uF - 16 button - Res 220 - Res 10K - Connector

<p>Hey!</p><p>It's great that you have decided to share your photos with us, but we need an explanation of what you made and how you made it before it can be published. Please write up a description of your project and reply to this comment to let me know that you are done. </p><p>Best,</p><p>Nicole, Community Support Manager</p>

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