CLOCK 7-Seg LED, DS1307 RTC, Keypad 4x4 Controller

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