help plzzzzzzz

[shahzad-h]

HI to all

 

[mrgjc]

no its a secret

 

[shahzad-h]

Hi mrgjc

 

[MP1]

shahzad,
This is a very hard question since it depends upon what is being converted to a display. Some examples: Direct connection from parallel port is possible. No ICs. A digital signal from a micro controller can be used without any ICs, whereas an analog signal will need a little help. A voltmeter IC such as 7107 can connect directly to a LED Display. We have a project in our "Projects" section based on this. See the link at the top of the page for "Projects".
A circuit used with digital gates normally needs 2 ICs such as 14553 and 14543 to convert the pulses to the correct format........oops, the secret is out  ;D

MP

 

[gogo2520]

hello shahzad-h

the secret ic is the 4511 cmos shhhhhhhhh don't tell anyone I told you
                                              gogo

 

[MP1]

Thanks gogo, I forgot to mention the BCD to 7 segment display ICs.

Shahzad: Here is a little diagram to get you going with the 4511 that gogo has mentioned.

MP

View attachment 39012

 

[gogo2520]

Hello
    That looks good MP, that should help shahzad-h get started with 7 seg's.
                                       
        as far as 5 by 7 dot matrix displays a 74hc595 and a microcontroller would work I have been playing around with scrolling message signs using a pic.
                                have fun gogo