Thursday, January 19, 2012

Motherboard


The main printed circuit board in a computer that carries the system buses. The motherboard is the main component of a computer. For here all the components are placed. Starting from proseror, memory, hard drive, and the other mounted on the motherboard. The motherboard connects all the components, which dubutuhkan by an a computer, to run In the same way it should. It is equipped with sockets to which all processors, memory modules, plug-in cards, daughterboards, or peripheral devices are connected.

Quality motherboard also determine the performance of a computer. The better the quality, then the computer will work better. Because if bad quality, the motherboard will not be able to connect a computer support computer functions.

There are a lot size of the motherboard. Of a small size, up to a size large. Depending on the needs of a computer. Usually the computer to the needs of the office, using only a small motherboard in assembling a computer. But if the computer is used for a complete multimedia needs, usually large-sized motherboard. Little big of a motherboard is determined by the amount of availability of additional ports, such as the number of PCI slots, the number of USB ports, multimedia and so on.

There are primarily two types of motherboards, AT motherboard, and ATX motherboard. AT motherboards are older, and not commonly used now a days. The AT and ATX motherboards differ in the form factor. Full AT is 12" wide x 13.8" deep, and Baby AT is 8.57" wide x 13.04" deep. Full-ATX is 12" wide x 9.6" deep and Mini-ATX is 11.2" wide x 8.2" deep. Other major differences include power supply connector, and keyboard connector. AT has 5-pin large keyboard connector, where as ATX has 6-pin mini connector. Similarly, AT has single row two connectors +/-5V, and +/-12V, whereas ATX motherboard has double row single connector providing +/-5V, +/-12V, and +3.3V.

Monday, January 16, 2012

UPS

UPS (LG628C)


An Uninterruptible Power Supply (UPS), also known as an Uninterruptible Power Source, Uninterruptible Power System, Continuous Power Supply (CPS) or a battery backup is a device which maintains a continuous supply of electric power to connected equipment by supplying power from a separate source when utility power is not available. There are two distinct types of UPS: off-line and line-interactive (also called on-line).

Thursday, January 12, 2012

ATA Cable

ATA cable


Advanced Technology Attachment (ATA) is a standard interface for connecting storage devices such as hard disks, solid state disks and CD-ROM drives inside personal computers. However, the current use of the ATA cable already becoming obsolete. Because it has developed the latest technology, the SATA technology. SATA technology provides many advantages compared to SATA technology. Higher speed, simpler.

The standard is maintained by X3/INCITS committee T13. Many synonyms and near-synonyms for ATA exist, including abbreviations such as IDE (Integrated Drive Electronics) and ATAPI (Advanced Technology Attachment Packet Interface). Also, with the market introduction of Serial ATA in 2003, the original ATA was retroactively renamed Parallel ATA (PATA).

Parallel ATA standards allow cable lengths up to only 18 inches (46 centimeters) although cables up to 36 inches (91 cm) can be readily purchased. Because of this length limit, the technology normally appears as an internal computer storage interface. It provides the most common and the least expensive interface for this application.


ATA connector on motherboard





Wednesday, January 11, 2012

DVD-ROM


DVD-ROM logo

DVD-ROM drive


DVD (also known as "Digital Versatile Disc" or "Digital Video Disc" - see Etymology) is a popular optical disc storage media format. Its main uses are video and data storage. Most DVDs are of the same dimensions as compact discs (CDs) but store more than six times as much data.

The DVD-ROM specification supports disks with capacities of from 4.7GB to 17GB and access rates of 600 KBps to 1.3 MBps. One of the best features of DVD-ROM drives is that they are backward-compatible with CD-ROMs. This means that DVD-ROM players can play old CD-ROMs, CD-I disks, and video CDs, as well as new DVD-ROMs. Newer DVD players can also read CD-R disks.

A laser beam in the DVD player tracks the beam as the disc spins, while a special device reads the intensity of the reflection as it bounces off the pits and lands. The reflective variance gets translated to bits of data which form bytes. Hence, DVDs, including the DVD-ROM, can vary in capacity as follows:

    * Single-sided single-layer disc — 4.38 GB
    * Single-sided double-layer disc — 7.95 GB
    * Double-sided single-layer disc — 8.75 GB
    * Double-sided double-layer disc — 15.9 GB

DVD-ROM is an input device because it holds information that is readable. There is also re-writtable cd's which allow you to add or remove information making it an input device.

CD-ROM

CD-ROM Drive


CD-ROM



CD-ROM (an abbreviation of "Compact Disc read-only memory") is a Compact Disc that contains data accessible by a computer. While the Compact Disc format was originally designed for music storage and playback, the format was later adapted to hold any form of binary data. CD-ROMs are popularly used to distribute computer software, including games and multimedia applications, though any data can be stored (up to the capacity limit of a disc). Some CDs hold both computer data and audio with the latter capable of being played on a CD player, whilst data (such as software or digital video) is only usable on a computer (such as PC CD-ROMs). These are called Enhanced CDs.

Although many people use lowercase letters in this acronym, proper presentation is in all capital letters with a hyphen between CD and ROM. It was also suggested by some, especially soon after the technology was first released, that CD-ROM was an acronym for "Compact Disc read-only-media", or that it was a more 'correct' definition. This was not the intention of the original team who developed the CD-ROM, and common acceptance of the 'memory' definition is now almost universal. This is probably in no small part due to the widespread use of other 'ROM' acronyms such as Flash-ROMs and EEPROMs where 'memory' is usually the correct term.

CD-ROM is an input device because it holds information that is readable. There is also re-writtable cd's which allow you to add or remove information making it an input device.

Tuesday, January 10, 2012

Keyboard

Keyboard (standar)


Multimedia keyboard



Physically, a keyboard is an arrangement of buttons, or keys. A keyboard typically has characters engraved or printed on the keys; in most cases, each press of a key corresponds to a single written symbol. However, to produce some symbols requires pressing and holding several keys simultaneously or in sequence; other keys do not produce any symbol, but instead affect the operation of the computer or the keyboard itself.




Mouse

Mouse (A4 mini-mouse)

 

In computing, a mouse (plural mice or mouses) functions as a pointing device by detecting two-dimensional motion relative to its supporting surface. Physically, a mouse consists of a small case, held under one of the user's hands, with one or more buttons. It sometimes features other elements, such as "wheels", which allow the user to perform various system-dependent operations, or extra buttons or features can add more control or dimensional input. The mouse's motion typically translates into the motion of a pointer on a display, which allows for fine control of a Graphical User Interface.





Optical mouse

Monday, January 9, 2012

Harddisk

Harddisk
Maxtor harddisk 80 Gigabite

A hard disk / HDD, also hard drive, hard disk, or disk drive, that stores and provides relatively quick access to large amounts of data on an electromagnetically charged surface or set of surfaces. Disc in the hard drive spinning fast. Each side plate has a needle reading and writing. Today's computers typically come with a hard disk that contains several billion bytes (gigabytes) of storage. The hard disk drive comes in variety of sizes. Each disk has more than one disc. The more the number plate, the greater the capacity to store data on a hard drive. But sometimes hard drive, hard drive is unbelievably vulnerable to shocks.

Development of technology is increasing rapidly. There are two of the most popular hard drive technology, the ATA and SATA. However, ATA has begun to be abandoned, and replaced by SATA. SATA provides better performance compared with the ATA. Higher speed, more stable, and not noisy. Has a larger capacity, but size is not too large.

The sizes may be physical as well as the logical in nature. The hard disk drives that are available inside the laptops are usually very small in its physical size. The same capacity hard disk drives are generally used for the computer desktop system has a comparatively larger size.

Because of the need to drive higher, and requires great endurance, now grown hard drive without using the disc. Named SSD, Solid State Drive. This hard drive uses cemikonduktor chip as storage media, the concept is almost unbelievably with flash.

Harddisk structure

Currently the price of a hard disk is getting cheaper, with data storage capacity increases. There panyak choices on the market. Starting from the choice of capacity, technology used, brand, durability, etc.. Depending on your needs.


CPU

 CPU (Intel Core 2 Extreme QX6700)



 CPU (AMD Athlon 64 FX)

A Central Processing Unit (CPU), or sometimes just called processor, is a description of a class of logic machines that can execute computer programs. Speed ​​of a CPU is set in units of Hz. For example, Intel Pentium "1 GHz". The greater the speed of a processor, the faster the food processor do the work. When the CPU is superbly developed very rapidly, the speed is no longer form the size of the cleverness of a CPU, namuan is the core of a processor. The more the core of the processor, the CPU will be getting smarter. This broad definition can easily be applied to many early computers that existed long before the term "CPU" ever came into widespread usage. However, the term itself and its initialism have been in use in the computer industry at least since the early 1960s (Weik 1961). The form, design and implementation of CPUs have changed dramatically since the earliest examples, but their fundamental operation has remained much the same.

There are currently two of the most famous manufacturers of CPU, the AMD and Intel. They compete with each other in creating new products. They are vying with each other, attracting the attention of consumers, to use products made ​​by their CPU. Sometimes disputes occur between the two manufacturers. However, consumers have a separate assessment. And every product has its own advantages and disadvantages.

CPU is made separately from other components. CPU can be installed and removed, or replaced in accordance with the wishes of consumers. CPU mounted on the motherboard. And into the brain of the work of computing tasks.


If you want to assemble a computer, make sure your computer is used for what will be. If it is determined, you can choose the CPU / processor to be used. There are a lot of CPU in the market. But the most famous brand is Intel and AMD. Both of these brands compete against each other in terms of quality. Intel processor excels in durability, superior AMD processors in terms of performance. In determining the processor is not arbitrary, because they have to consider other components to be used, such as the motherboard. Motherboard for Intel, in contrast to the motherboard for AMD.

Wednesday, January 4, 2012

Floppy Disk

Floppy Disk

 Floppy Disk drive


A floppy disk is a data storage medium that is composed of a disk of thin, flexible ("floppy") magnetic storage medium encased in a square or rectangular plastic shell. The floppy drive reads data from, and writes data to, a small disk. The most common type of floppy drive is the 3.5" drive, followed by the 5.25" drive, among other sizes.

Today other storage devices that are more convenient and robust, such as compact disks and memory sticks, have largely replaced floppy disks. A CD can hold upwards up 600 MB, and even the smallest capacity memory stick holds several hundred times the amount of a single floppy disk.