For PCs or Macs, you might find them irreplaceable!
Computer drawing pads can be a good answer to replace the mouse, as you may find
less repetitive strain when using them. And if you’ve ever tried signing your name
with a mouse, you will see that some tasks are much easier with a computer drawing
pad. If you intend to do a lot of drawing, you might want to consider a larger pad
than the 5”x4”, or 8”x6” basic models, but remember that you will have to move your
arm, and not just your wrist with the larger pads. You may also need to rearrange
your workspace if the pad is much larger than a mouse pad.
There are some choices when it comes to the actual computer connection. The USB port
is widely used, but you can get electronic drawing pads that use a serial connection,
which is good for an older computer if you have the port, or even Bluetooth, like
your cellular phone.
The pen should be comfortable to hold, with easy access to any buttons. I find that
I get confused with more than two buttons, but you may have several needs that can
be programmed on to as many buttons as you get. They can vary in weight, partly because
wireless pens need batteries, but if you get a wired pen make sure you can choose
where it connects to the pad if you are left handed. The other point with a wired
pen is that you won’t lose it! However, there’s usually a place to hold a wireless
pen when not in use, and I haven’t lost mine yet.
To be honest, I’ve never had a problem with the accuracy of the pad, as any challenges
come from a shaky hand and not the definition - but if you have precise needs, you
may want to check on the lines per inch - typically you might have 1000 lines per
inch on a cheap computer drawing pad, and I don’t think my hands are that accurate!