Ibm,dell,hp,wipro,cisco,ipsoft,
Look, IBM has its own space in IT industry and no one can dominate IBM for that.. However IBM has some great competitors like HP, DELL and Microsoft..
It usually refers to the company which assembles the computer. (e.g DELL, IBM, GATEWAY, HP, APPLE)
Many Different people including Macintosh , Dell , Toshiba , IBM , HP Ang MPC
Refurbished PCs can be bought from various vendors such as Best Buy, Newegg, IBM, HP, Dell, Overstock, Easy IT, Metro Refurbished Computers and many others.
The most famous brands are HP, TOSHIBA, LENOVO (IBM), DELL. These brands have high-quality products and services.
Laptop power supplies generally come from their manufacturer. So HP power supplies would come from Hewlett Packard, and IBM power supplies would come from IBM.
Information about top brands that manufacture personal desktop computers is readily available online. Dell, HP, Gateway, Apple, Acer, Sony and Asus are just a few of the brands that manufacture personal desktop computers.
Be more specific of the two types you want!
This answer varies on a few things. Are we talking about computer manufacturers or software developers? Both play a big part of computers. Some of the worlds leading PC manufacturers are: HP, Asus, Toshiba, Dell, and Lenovo. As for software there are way to many to be named.
DeLL
You can find it either on your computer's manufacture website such as Dell, HP, Sony, IBM and so on. Or on the sound card manufacture website.