Fn key
Yes, in most situations it is. However, it depends on the computer. Older computers often had integrated keyboards, as do laptops and tablets. Most modern desktop PCs do have an external keyboard.
no. A computer system is just the tower. The computng part itself. Keyboards, mice, speakers and monitors are accessories.
One can purchase desktop clocks at their local stationary store such as Staples or Grand and Toy. They often have a variety of clocks that one can choose from and come in a variety of colours.
Keyboards and Mice
There are sales for desktop computers and most other electronics on Black Friday. However, the quantity is quite limited and the stores with the promotion will vary.
Most of the personal computers are usually microcomputers. They include the laptop computers, the desktop computers, the tablet computer, and the smartbooks.
a computer mouse
I dont think its possible, most computers only have 1 slot for keyboards.
Windows, MacOS, and Linux are the most common.
Yes most keyboards are universally compatible, although there are a few exceptions that might only work with certain brand computers or operating systems, but it would be stated on the packaging if that is the case.
Most of the popular department stores will sell a computer keyboard. This includes Walmart, Target, Costco and others. Also computer stores such as Dell will have them.