Need help making a microwave like timer

[Kypano]

I have this project for school that I could really use some help on.  I need to build a timer that can be set to five second intervals up to 60 and then countdown.  Anyhelp would be appreciated thanks.

[Kypano]

I forgot to add that the displays are 7 segment hex displays

[Fernando_D]

Hi there,

I'm not sure what type of parts you want to use for this project, but here is a design I found based on the 8051 microcontroller, which can be found in Multisim.

Countdown timer using 8051 microcontroller

Hope this helps.

Fernando