Describe generally about total computer system & computer networking

A total computer system is comprised of many internal and external devices. The complete computer made up of the CPU, memory and related electronics (main cabinet), all the peripheral devices connected to it and its operating system. Computer systems fall into two broad divisions: clients and servers. Client machines fall into three categories from low to high end: laptop, desktop and workstation. Servers range from small to large: low-end servers, mid range servers and mainframes.

A computer network is a group of computers that shares information across wireless or wired technology. Computer networks used to only be available for corporations but they are affordable for small businesses and individuals. Computer networking requires two computers, a protocol and the hardware to connect them. Collection of two or more computers that are interconnected with each other to perform data communication using the data communication protocol through communications media (wired or wireless), so these computers can share information, data, programs, and use of hardware together.