A general view on Personal computer

A personal computer or PC is commonly a microcomputer designed to be used by one person at a time, and appropriate for general purpose tasks like word processing, programming, sending messages or digital documents (comprising of images, text, audio or video) to added computers on the network (email), multimedia editing or game play, generally used to run software not written by the user. Unlike minicomputers, a personal computer is often owned by the human being using it, representing a low cost of purchase and ease of operation. The user of a modern personal computer may have considerable knowledge of the operating environment and application programs, but is not unavoidably interested in programming or even able to write programs for the computer.

In current usage PC nearly for all time refers to an IBM compatible and the word may even be used for machines that are in no way personal computers but still use the fundamental architecture of the IBM pc.

During the 1990s, the power of personal computers improved radically, blurring the previously sharp distinction between personal computers and multi-user computers like mainframes. At present higher-end computers time and again distinguish themselves from personal computers by greater dependability or greater ability to multitask, rather than by straight CPU power.

Fuse box

A distribution board (known in the United States as a (circuit) breaker panel, panelboard, or load center or for old ones, fuse box) is a growing enclosure for several electrical circuit breakers. These are usually placed in two columns. Small single-phase boxes, with the waves in just one row, are known as consumer units in Britain. Distribution boards are characteristically found in central locations inside buildings and often serve as the point at which electricity is distributed within a building. Circuit breakers can be used to physically de-energize electrical circuits when the downstream wiring is being serviced.

Circuit breaker panels are constantly dead front, that is, the operator of the circuit breakers cannot contact live electrical parts. During servicing of the sharing board itself, though, when the cover has been detached and the cables are visible, North American breaker panels commonly have some live parts exposed. British distribution boards usually have the live parts enclosed to IP20, even when the cover has been removed for servicing.