Today I'll introduce you how to make a simple digital watch with LCD 16x2 and PIC 16F877a. It's very easy to implement this clock and you can make this as a gift clocks for kids. I'll also provide you the source code of the clock so you can easily customize to make your own countdown clock, count up timer or something that more useful than an analog clock. OK. Below is the circuit diagram of the digital watch. Online Digital Clock Circuit Diagram SOURCE CODE: Tags: digital clock online, 555 timer, count up timer, a timer, 555 timer projects, digital wall clock, Note : If you have any problem with running this code, feel free to comment below. This project has 2 file as described below. Copy it to your workspace, compile and run. File: LCD4bit.h #define lcd_RS PIN_D1 #define lcd_RW PIN_D2 #define lcd_E PIN_D3 #define lcd_B1 PIN_D4 #define lcd_B2 PIN_D5 #define lcd_B3 PIN_D6 #define lcd_B4 PIN_D7 #define dong_1 0x80 #define dong_2 0...