I am try to make a digital clock with big led display. How to convert tms3450nl display to a large led display?

Our old water heater finally quit. We were given a 3 yr old State Select electric water heater and my husband is installing it. It seems the reset button will not reset. There is power to the top element, but when he checks the bottom element... no power! The reset button seems to be unable to...

I have know access for any use on the laptop because Im locked out of the computer. Sometimes when I turn on the computer it won't have its backlight supporting the page that its suppose to show when its loading. If it turn on with the back light my home screen appears. It doesn't give me any icons...

How do I reset the service interval display on my 2000 BMW Z3. I have just changed my oil and need to reset. I found the data link on the console and have been told can be done by grounding the 7 pin for 3 seconds while the ignition switch is on. Will this work? Thanks!