Input Output Switch dan LED Atmega16 dengan Proteus dan CodeVisionAVR

Thanks a lot. Don't know your language. There's probably some useful information in comments. But scheme works well.

mau tanya gan ..
kok saya cobain tapi lednya cuma bisa on terus pas buttonya dipencet ngga kembali mati ??
mohon pencerahannya terimakasih