Comments on: Interfacing 7-segment display using 7447 decoder

By: parth arora

parth arora — Thu, 05 Apr 2012 04:37:55 +0000

hey do u knw how to interface 7 segment common cathode to pic 18f4520 using ic 7447
if anyone knw plss mail me that
my id is arora.parth15@gmail.com
plss send that

By: aldwin

aldwin — Mon, 26 Mar 2012 03:41:55 +0000

we have a project in our subject, and it was based on the elevator. when you input 1, it requires to light up the LED #1, and display 1 in 7-segment. Using this materials, 7 segment, 8 LED, 7447, and a parallel port. can anyone help me? ps. using .asm file?

By: jyoti

jyoti — Sat, 17 Mar 2012 08:08:52 +0000

hello…am a 2nd year student so can u answer me 1 question and my question is:-

WHAT IS THE INTERFACE BETWEEN 8085 MICROPROCESSOR AND 7-SEGMENT DECODER ?????????????
So plz give me answer in detail………
my email id is :-
arorajyoti22@yahoo.com

By: jey

jey — Thu, 08 Mar 2012 03:33:16 +0000

mga puta kau bket hindi nyo nlagay ung leter ng 7 segment

By: jey

jey — Wed, 22 Feb 2012 13:17:14 +0000

can i ask if how i can display 1 and 2 using push buttons,seven segment common anode,74ls47 and 74ls190.thank you.hope i can have a reply as much as possible

By: Abhishek thakur

Abhishek thakur — Fri, 17 Feb 2012 08:44:04 +0000

reply soon

By: Abhishek thakur

Abhishek thakur — Fri, 17 Feb 2012 08:43:39 +0000

hey i wanna make a pass key controlled interactive parking system….please help me by suggesting thge code…..

only authorised people can park the car,means they have a password to open the gate and on the gate itself the LCD is showing the number of places epmty for parking.

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?