Should you use a typewriter or a PC when writing a book or novel?

It is a personal choice but you can use either. As a published author, I would highly recommend using a PC. Many agents now require an 'electronic' copy of your manuscript, as do publishers. Even if you are going to self-publish, you will still need to get it into a computer in order for any modern printer to handle the printing request. In the long run, it will cut down on costs and headaches.

Also if you make a mistake on typewriter... Big mistake. And PC are easier in my opinion