First off in third world countries they don't really have farms id call them more like gardens haha especially compared to farms in the US they are just tiny "gardens", if you will, to keep their families alive
That's very, very narrow-minded. Take India for example. Although the average farm size is three acres and productivity is low there are hundreds of millions of farmers. Farming employs around half of the country's entire workforce. Half of the country is arable land. To name a single crop, India was the second highest producer of wheat in 2008 with 79 million metric tons, behind China and ahead of the US according to the FAO. It's interesting to note that because of technology, less people have to be employed in developed countries to keep the same rate of productivity as you would with less developed countries. Now, throwing a bunch of stats doesn't do much but I'll just make my point here: You can't assume the third world is solely composed of subsistence farmers. Making broad statements isn't a good idea.
Second give me something that doesn't have a computer involved with it
I could think if I wasn't so lazy, so let's consider something.. a lot of the things we live with today existed before proper computers, not the vacuum tube ones, existed. Even if we take that out of the equation, you can still produce those things, albeit less conveniently. I can live without electronics; I won't die.
All electrical appliances don't qualify as being electronic. Machines used on the production line don't necessarily rely on computers. I don't feel like talking any further, but you should get what I mean.