Real Time Clock (DS1307) OS25B10 extremely accurate I2C real-time clock

extremely accurate I2C real-time clock (RTC) with an integrated temperature-compensated crystal oscillator (TCXO) and crystal

The real-time clock/calendar provides seconds

Arduino Ethernet Shield  allows an Arduino board to connect to the internet

Production line sensor

and the 0-9 value of the 'tens' place has 3 bits for the byte filled with the seconds value

Real Time Clock (DS1307) OS25B10 extremely accurate I2C real-time clockIntroduction: The module based on DS1307, The DS1307 serial real time clock (RTC) is a low power, full binary coded decimal (BCD) clock calendar plus 56 bytes of NV SRAM. Address and data are transferred serially through an IC, bidirectional bus. The clock calendar provides seconds, minutes, hours, day, date, month, and year information. The end of the month date is automatically adjusted for months with fewer than 31 days, including corrections for