Technology is very valuable in the workplace but not all workers have a computer available for work to be done.
If the supply for computers in the workplace would increase, then there would be no need for employees to share computers.
If production of computers increases, then the supply curve will go to the right and up.
Import bans are exactly what they sound like. An import ban on import cars would put a pretty big dent in the economy.
The import ban on transportation of the world would be very bad.
The supply curve for imported cars would go to the left and it would decrease everything because employed people with certain jobs would be late. The whole economy would fall apart because of people that rely on their cars.