PORTS Forum

Ports and Interfaces => Parallel Port => Topic started by: selvabha on March 27, 2011, 02:52:41 am

Title: Parallel port resets while my system resets.
Post by: selvabha on March 27, 2011, 02:52:41 am
Dear Sir,

I have connected one of the data pins of the parallel port to control a relay.

The relay goes ON and OFF while system resets.

How can i avoid this.Any solution from you will be appreciated.

Thankyou
Title: Re: Parallel port resets while my system resets.
Post by: selvabha on March 27, 2011, 05:52:52 pm
Dear Sir,

Also today i noted my parallel port clicks when the system shuts down.
Title: Re: Parallel port resets while my system resets.
Post by: Jan Axelson on March 27, 2011, 10:15:44 pm
Use a latch such as a 74HCT374 to enable the outputs and latch the data.

Jan