Comments on: Interfacing 7-segment display using 7447 decoder

By: soldeerridder

soldeerridder — Fri, 13 Jan 2012 22:37:54 +0000

common cathode (second circuit) does not work.
In the first circuit a 0 turns a segment on, where in the second circuit a 1 causes the segment to lid.

By: furqan

furqan — Sun, 01 Jan 2012 09:00:32 +0000

should resistor be connect tn pin 3 and 8?

By: sumeet

sumeet — Sun, 11 Sep 2011 13:08:32 +0000

i want to make a digital clock with 3 displays of hours minutes and seconds using 8051 uc & 7 segment displays….so can u please tell me how to interface six seven segments with the microcontroller for this purpose?

By: Gaurav

Gaurav — Wed, 07 Sep 2011 10:12:39 +0000

Im in final year………so, please suggest me an advance project for my final year which should be based on micro controller………….gswan00@gmail.com………that’s my email id…………..

By: Gaurav

Gaurav — Wed, 07 Sep 2011 10:09:49 +0000

Hello there, I want to make an circuit with using Opam to perform addtion of two voltage signal….which should be displayed on double seven segment display…..in between these..i used simply encoder and Bcd but im unable to display the result as per according to my circuit…………please help me………or send me a corect circuit for it…….
gswan00@gmail.com that’s my email id…………please send me that correct circuit…

By: eiram lee

eiram lee — Sat, 27 Aug 2011 22:23:26 +0000

Hello there, do you have codes or program aside from the one given above?…specifically using c++

By: Pradeep

Pradeep — Wed, 13 Jul 2011 04:36:19 +0000

How to recognise7-Segment Display is common cathode or common anode.

By: banish gupta

banish gupta — Sun, 26 Jun 2011 12:59:25 +0000

thanx bro.. Ur info help me a lot.. Plz send me request on fb. Banishgupta123@gmail.com i want to get more knowledge from u..:-)

By: ezeldeen

ezeldeen — Sat, 21 May 2011 20:50:36 +0000

how can I use decoder with display

By: safer

safer — Thu, 21 Apr 2011 16:25:33 +0000

Please give m a circuit for football substitute board using 89c51&7447