They don't. People are Autistic Retards trying to make a point.
all the newest computers you buy now are considered as "modern computer".
Earlier computers.
Alan Turing is considered to be the father of the modern computer. He was a mathematician and is the creator of the Turing machine which was the precursor to modern computers.
the sixth generation of computers means the modern computers
Generally its to CPU (Computer Processing Unit). In more modern computers there is also the the GPU (Graphics Proceassing Unit) that helps handling graphics. If you were looking for specific processing devices, the two most popular CPUs are Intel's and AMD's
Older computers might have mercury, but most modern computers are Mercury-Free.
No, your desktop computer is a digital computer as are virtually all modern computers.
how computers programs impact modern society
Before modern computers were invented word "computer" meant "somebody who computes".
The closest equivalent a computer has to a 'brain' is its central processing unit, or CPU. This component is what processes data, as the name would suggest. However, most modern computers also have a graphics processing unit, also known as GPU or graphics card. This processes some video output as to take some load off the CPU.
Yes, a computer can work without an expansion card. Most modern computers have integrated components, such as onboard graphics and sound, which allow the system to function without additional expansion cards. However, for enhanced performance or specific functionalities, such as high-end graphics or specialized processing, expansion cards may be required.
There is no difference between the two. A Graphics Processing Unit is a Graphics Processing unit whether it is in a XBox 360 or otherwise. Now, the question here is could it be interfaced with modern computers. Probably not. Not knowing which interface the XBox 360 uses, I could not answer that, but it is probably not PCIExpressx16...