C51 4 Bits Digital Electronic Clock DIY Kit ชุดประกอบนาฬิกาปลุก

AT89C2051 4 Bits Digital Electronic Clock DIY Kit ชุดประกอบนาฬิกาปลุก วิธีการประกอบ https://www.youtube.com/watch?v=qwHMx1vGJSE การตั้งเวลาและการปลุก https://www.youtube.com/watch?v=qK7F_iwNeSw It is based on AT89C2051-24PU. Basic Functions: - 1. Hour and minute display & minute and second display - 2. Two alarms set up Specifications: - There is a buzzer that works as an alarm. When the clock reaches hours...like 1:00, 12:00, etc., it will beep for 3 times. The alarm beep is optional, you can disable it. - The kit can be operated with a 3.3V to 6V battery. - On the kit, you will see two switches S1 and S2 which are used to set up time and alarm. - The time and alarm time are displayed with 4 digit seven segment display. Documents: 1. Assembly tutorial 2. How to use digital clock 3. Download manual