Good advice, Rosalind.
A computer keyboard is not like a manual typewriter.
You old-timers know what that is. (-;
The micro-switches below the keys need a gentle touch, just like the mouse.
GK, you probably need a new keyboard. Possible problems:
- the switches are damaged.
- there's dirt in there.
- the encoder chip might be faulty
For a desktop, they start at $10 here. Of course, a quality keyboard will be more.
Have you noticed if particular keys are at fault? How old is the keyboard?
If you have a laptop, it will cost you. You could try a can of compressed air to blow out dirt.
Hope that helps.