Using for ( ), msDelay( ), Timer Delay and Interrupts in 8051 C Programs that toggles/ON/OFF LEDs

Learn the following: How to turn ON or turn OFF, active-high or active-low LEDs. How to use for( ) to have 1 second delay? How to use msDelay( ) to have 1s delay? How to use Timer 1 in Mode 1 to have 1s delay? How to use Timer 0 interrupt and T1M1Delay( ) ? How to use a switch to control toggling and turning on or off LEDs, with Timer Delays and Timer interrupts?