Introduction - If you have any usage issues, please Google them yourself
The experimental circuit shown in Figure, 8253' s 1MHz clock CLK0 then, GATE0 then+5 V, OUT0 then 8255 the PA0, J1 then speakers, computer programming so that as the number keys 1,2,3,4,5,6,7 flower button, press that the issue of the appropriate scale.