Comments on: The First 8051 Microcontroller Project – LED Blinking

By: Mohammad

Mohammad — Wed, 02 Nov 2011 00:56:43 +0000

@Daljit: Simple math. Do you see the right side (+) of the LED is connected to VCC (+5V)? Now if you ground (0V) the other side, LED will lit.

By: Daljit

Daljit — Tue, 01 Nov 2011 11:13:55 +0000

sir please tell me why led is blinking on clear and off when set…???why??plz answer me m so confused

By: Mohammad

Mohammad — Sun, 10 Jul 2011 20:06:17 +0000

@Gaurav Singh: You can do it too, but add a current limiting resistor in series to make sure the current through the LED doesn’t go above 25-30mA.

By: rashmi chauhan

rashmi chauhan — Sun, 10 Jul 2011 14:17:41 +0000

HI Sajiv

this is good for beginers ,good job

check out this blog for 8051 usb programmer schematic

http://microembeded.blogspot.com/2011/06/usb-8051-avr-microcontroller-programmer.html

By: gaurav singh

gaurav singh — Sun, 10 Jul 2011 14:13:08 +0000

sir
is this possilbe to connect led + terminal to the mcu and – to the gnd

will the mcu draw enough couurent to blink the led

By: Sajiv

Sajiv — Tue, 06 Jul 2010 06:54:07 +0000

Good for beginners.

By: Prithviraj

Prithviraj — Wed, 12 May 2010 13:46:27 +0000

But how do you program the 8051? serial or ISP?? please give the programming circuit sir…..thank you…..

By: Doru

Doru — Fri, 15 Jan 2010 12:21:58 +0000

Hi there. I have a simple project for school. I need to connect a 8051 to a 7 segment lcd and to make a counter. Basically once every 2 seconds the display should increment with i(where i is a value that can be set from the assembly code). When it reaches 10 it should overflow and start over.

I need to simulate this in proteus.

Please help me. I will be forever grateful.

By: nasir

nasir — Thu, 10 Sep 2009 03:38:44 +0000

do you have an example to blinking 7 led sir?
i need a circuit and the source code also..
perhaps the source code is using keil uversion and 8051 microcontroller..

By: deena

deena — Sat, 05 Sep 2009 12:25:37 +0000

goooooooooddd..