Welcome to our site! EDAboard.com is an international Electronic Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.
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 I²C, bidirectional bus. The clock/calendar provides seconds, minutes, hours, day, date, month, and year information.
You should use some microcontroller ic for driving 7-segments and reading
ur last link is rele very nice,but it's schematic is not very clear. The image quality of the schematic is too low.What r the values of resistances and capacitors??? Also i want c code or BASIC code so that i can modify it later as my wish but this link is only provided with hex code.can u plz help me with coding and dis unknown value of resistances and capacitors??