i have a project and i need a help!!

Hello

my project is (( PC controlled Musical Insturement)) ,without AVR and we will use the

keyboard to enter the inputs so, i have to know about the serial communication logic

circuits to send the data using al keyboard to my circuit and i dont knw anything about

it, also how can i connect the inputs with different tones to one speaker ??😔


i need ur help quickly because i have only 10 days to finish my project .. thanks ​