Using key combinations to type symbols

[orthodoc]

Does anyone know how to set a certain key combination to type a symbol. In my line of work, I commonly write up and down arrows to describe things. I am trying to find a way to use a key combo like "control u" to type an upward arrow and "control d" to type a downward arrow. I figured out how to do this in Word, but I want to make this key combo global so that it works in any program I am typing in.

Any ideas?

 

[mrichmon]

Does anyone know how to set a certain key combination to type a symbol. In my line of work, I commonly write up and down arrows to describe things. I am trying to find a way to use a key combo like "control u" to type an upward arrow and "control d" to type a downward arrow. I figured out how to do this in Word, but I want to make this key combo global so that it works in any program I am typing in.

Any ideas?

What you are describing is commonly known as "customizing the keyboard layout" or "customizing the keyboard map". A Google search turns up some instructions for OS X but it's all pretty hacky.

A possible alternative -- if you use a usb keyboard you *might* be able to use the program USB Overdrive to map some of the keys to do what you describe.

 

[spydr]

I also would like to be able to add such vertical arrows and some greek characters in text. Would be great if some one figures out a way to incorporate such customized key combinations as a global behaviour.

I do have a USB keyboard. Any suggestions for reliable (and hopefully free)USB keyboard remapping apps?