Hello Big Mama.
You need to stand your ground on this "no computer thing". He already has so much control over you, please don't give him anymore.
His jealousy is his problem, not yours. Seems like he wants to keep you away from any outside influences, that may enlighten you.
Does he allow you to see your family and friends, I bet not! You need to break out on your own a bit. Find a job and make your own money, do things that make you happy.
You can't let this man have total control over you and your life.