Help with digital clock

[the.spearhead]

i want to built digital clock (hour,minutes and second ) with ability to adjust timing and act as stop watch with simplest form

 

[Menticol]

You need to learn Microcontrollers to do that. Arduino is a good example, but may be expensive depending of your country.

https://en.wikipedia.org/wiki/Arduino

 

[ccurtis]

Another option. A bit of Internet searching comes up with this part. This single IC digital clock appears to be produced presently and distributed. Asian part apparently. I remember the old Mostek IC, but those are long gone.

http://www.utc-ic.com/spec/LM8560.pdf

 

[the.spearhead]

thanks for your attention but i want it by logic and seq. gates only like 555 (flipflop,ecoder,decoder,mux,demux,.................) with out micro controller