This a program for automatic school bells using signals from LTP [printer port]. Advanced windows like graphics Multi exe program Hot keys file database electronic circuit for fire alarm using LDR A bell circuit Parallel port HOW TO GUIDE Keyboard HOTKEY program fire alarm details Electonic circuit control through parallel port [LTP]

-　　 This is a program for automatic school bells using signals from LTP [printer port]. Advanced windows like graphics　Multi exe program　Hot keys　file database　electronic circuit for fire alarm using LDR　A bell circuit　Parallel port HOW TO GUIDE　Keyboard HOTKEY program　fire alarm details　Electonic circuit control through parallel port [LTP]