Yes they have.
Computers have improved in a significant way since 2007. Applications have been compressed and computers have increased in terms of capacity while reducing the bulk size of the body of the computers.
It depends on what brand. some have been improved on display and smaller pixels.
They have improved in technology and stuff poo
a computers memory can be improved by adding another harddrive on the computer and/or removing files that you dont use( do not remove files if you dont know what they are)
The iPod was improved because other technology got improved for example computers got turned into laptops which got turned into notebooks (Mac) .
yes they had improved because instead of burnig fuel you can do things on the computer you couldn't do before computers were made .
no never but it improved every aspect of our life.
Hovers, clean carpets. computers homework and work
Gathering weather data and using computers have improved the accuracy of weather forecasts.
The use of magnetic tape improved the performance of computers by giving them the ability to read and write data quickly and reliably.
Can you please reword the question for clarity? Do you mean what companies manufacture computers? Or Who invented or designed computers? (there is no single answer to that, many, many people and companies invented or improved the various technologies and concepts that are used in computers)