Does the 12v on pin 4 of a PC serial port supply sufficient current to power the LCD (if reduced to 5v using a zener diode)?

What current does a PC serial port deliver?

I take it, it is not as simple as soldering the jumpers on the LCD PCB and just connecting the serial cable to the PC, as ...

How do you power your display from only the serial cable?
I have a regular lk404-55 and i need to get power from the serial cable only as my LCD is going to be 10 feet away from my PC.

Thanks

It is fine now, i rewrote the lcdriver functions with a standard serial library.

By the way, for anyone as new to this serial nonsense as i am....

http://www.tetraedre.com/advanced/serial2/indexv2.html

Found this c++ library much easier to use than other ones i looked at.

Ross

Hi

I am using LCDriver to display my menu and i am now wanting to accept keypresses from my keypad.
How do i do this? I have another serial library which i can recieve the characters but how do i use the 2 together?

Do i have to free the display from LCdriver and then check for any characters and ...

Hi
Has anyone got a function or could be bribed to write me one which checks com1 for any characters? I have wired up my keypad and checked it with hyper terminal. I also made a function with LabWindows CVI to determine the ASCII values, but i cant get it to work in Borland, so i am now back to ...