IO interface parallel port | COA 

Idle signal is sent when printer is ready to accept a character (i.e. when printer is free) but in the video you told that when printer is busy it will send an idle signal.

Super.. U r teaching is mind blowing awesome.. Thank you

Very helpful mam ...thanks

Please make a video on interrupts topic

Avoid writing part in the video mam its my kind request .. your subject content is good..

Slave ready signal... Explain clearly madam 🙄

Ultimate God 🙏

I not understood anything

For this question which book u use

poorest explanation ever seen

Hindi me

in Hindi me

Completely useless.