According to Carter, “a Pc case is the basis of the computer system within which all the other parts reside. The choice of a case size determines what other components of a machine may fit inside of it. It is the visible portion of a machine system”. Some modern computer cases come with a power supply pre-installed inside them, but most of them do not. It is therefore necessary for one to get a power supply which will work with the rest of the components and which has sufficient power.
There are different types of cases which include small towers, tall towers, horizontal desktops, slim desktops, and also the “lunch box” size and shape made popular by the Shuttle and Mini-ITX case builders. (Carter, 2002:14) Computers Pc cases are available in many form factors or rather different magnitudes. The size and form of a case in a computer is generally dogged by the motherboard’s form factor that is intended to accommodate, since this is the most central and largest component of many computers. As a result, form factors in individual’s computer typically spell out only the inner proportions and case layout.
Form factors for blade servers and rack-mounted incorporate defined peripheral dimensions as well bearing in mind that these computer Pc cases must themselves fit in particular inclusions. The conservative viewpoint says that a case carries out several functions. First, it holds on to a range of form factors so as to house the different components that make up a PC. (Ashton B, 2002:33) These factors are PSU, the motherboard, PCI cards, drives and fans. It also provides noise shielding. It allows air to flow through the case in order to cool the components within it.
... -inch drives will continue to dominate in portable computers. The drive to smaller form factors is made possible by continuing advances in electronics ... drive of at least 20 MB capacity was a standard component of most PCs. However, floppy diskettes are a cheap and ... similarly constructed, but they are housed in a rigid plastic case, which is much more durable than the flexible covering on ...
It gives a Pc its attractive appearance. The silent viewpoint is mostly in emphasis. Form factor adherence is implicit for all cases. However, EMI looks and shielding are derivative to the main properties of airflow vents that are exceedingly unobstructed, tortuous paths which facilitate noise escape to the case, airflow paths that are well-directed within the case and low sound transmission, sturdy construction and low resonance. To help personalize Pc cases on the computer market today, majority of the computer Pc case manufacturers present with various accessories.
These accessories take account of items which include a case cover that has a window that has been built-in to specialized fans and lights. Bearing in mind that the time for the standard beige box are no longer in use, users now have several factors to consider when picking out their case which include color, design and lights and windows as well. (Cheek, J, 1995:19) Design The material of the Pc and the eminence of the workmanship normally make a big difference in a Pc case. At their base most cases are made with aluminum while others are made with steel.
Other materials which incorporate plastics and acrylics as well are also used to complement the design and appearance of the Pc case. These materials not only impact on the ways that heat is held in or circulated out of the system but also impact on heaviness or portability of the Pc case. It is however of great significance that individual checks how the Pc case is put together. Finished edges or rather beveled normally minimize the possibilities of cuts while working inside the Pc case. To prevent doors breakage, hinges should be sturdy enough. Power Supplies
In modern days, majority of the computer cases are put on the market independently from the power supply. Nevertheless, a number of these computer cases do come with a power supply already included. In cases where computers comes with power supply already inaugurated in the case, it is importance that users authenticate that the power supply wattage meets the requirements of the mechanism that will be fixed inside. In addition, it is importance for users of the computer to check and ensure that it has the correct connectors and enough cables essential for all of the inner components.
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Layout The adornment of the computer Pc case and its design can unswervingly impact on its usage. The position of the fans and ports on the computer normally improves access or rather increases the style of the Pc case. For instance, when a case has been placed on the floor, it would be considered better for the extra USB, audio and Fire Wire ports to be positioned on the top of the case than when positioned on the front. On the other hand, it would be better for the ports to be on the front should the case be on the top of a desk or inside a cabinet.
Drives in the rear a door panel can lessen noise and this gives the Pc case a look that is more uniform. However, although the drive behind the door panel reduces the noise and gives the computer Pc case a more uniform look, it makes it impossible to access the drives behind the door panel. Conclusion Excess heat has a negative impact on the performance of the internal components in the desktop. Due to this heat effect, cooling is considered a very important factor to bring into attention.
An assortment of vents ducts and fans that are built into a Pc case either aids or deters the flow of the heat from the internal to the peripheral parts of the case. A computer Pc case with a large quantity of the flow of air can also lead to a large amount of dust buildup inside of the case. However, the amount of dust in the computer Pc case can be reduced by acquisition of Filters and screens that are designed to help minimize dust in the Pc case. (Hill, P. , 1995:29) In order for one to have silent computing, unrestricted airflow vents should be used.
A major approach is the use of quiet fans which work at reduced speed to eliminate the noise produced by fans. Since the volume and the pressure of airflow is significantly lower than that of a standard PC, any hitch at the vents creates a quite a large negative effect in temperatures. Well-directed Airflow Path in the Case is best accomplished by reducing the number of superfluous holes in the Pc case. Randomly placed holes on the sides of cheap cases, for example, tend to disrupt the ideal flow of air, which is generally seen as from front bottom to the back top. (Moir A,1991: 23)
... a good back up to the computer system in cases where the computer has crashed or where back up ... larger organisation. The purchase of a personal computer with a Hard drive of 10 gigabytes, monitor, keyboard, ... organisations file server would probably have over four hard drive. The disks read from the outside to the ... it. It should be protected from extremes of heat and cold, i.e. placed away from ...