Please I need help with my E-Jam project

Hi Everyone! Please I'm doing a project on an Electronic Jam and I need any theoretical resources that can aid me in my project. For details on an existing circuit check https://www.electro-tech-online.com/custompdfs/2009/10/june99_EJam.pdf. Can anybody please forward any links that can be helpful to me or email any resources to this email address: tundesafe@yahoo.com. Thank you all for your help.

Edit your post and delete your email address. Spy bots will find it and spam you.

What information do you want?

For other circuits Google: Jeopardy game circuit

Ken

Projects from that site frequently do not work and use very old parts. TTL logic is very old and needs a high current regulated 5V supply.