Computer speaking is one of the funny trick in windows.This video about how to make your computer speak or talk entered text.Open notepad copy below code and save the file as *.vbs .Open the *.vbs file and enter text to speak or talk computer.Code is
Dim Message, Speak
Message=InputBox("Enter text","Speak")
Set Speak=CreateObject("sapi.spvoice")
Speak.Speak Message