8051 INTERFACING WITH LED, SWITCH, SSD AND KEYPAD

This is a wrap-up article for interfacing hardware with 8051 microcontroller. It's a combo deal for starters because this time, I have interfaced switches, LEDs, seven-segment-display and keypad all at the same time. I have already talked about them, individually, in my previous articles but for better understanding I think it's important to know how they work together. It will also give you some idea about dividing your code into segments and pieces which ultimately polishes your code writing skills.

8051 LCD INTERFACE

LEDs (lights), interfaced with 8051 microcontroller, can be used to display binary numbers or on/off states while Seven Segment Displays (SSD) can display digits but that's not enough. What if you wanted to display a proper message consisting of numbers, letters, characters, symbols e.t.c.? That's where LCD Screens jump in. LCDs make it convenient to display anything to the user. It may sound tricky to interface an LCD with a microcontroller but trust me or not, it's simpler than it looks and this short tutorial will make sure that you get the hold of it.