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USB Hub (External Port)

A USB hub is a device that expands a single USB port into several so that there are more ports available to connect devices to a host system. USB hubs are often built into equipment such as computers, keyboards, monitors, or printers.

Physically separate USB hubs come in a wide variety of form factors: from external boxes (looking similar to a network hub) connectible with a long cable, to small designs that can be directly plugged into a USB port. An external USB hub can consolidate several everyday devices (like a scanner, camera, printer, etc) into a single hub to enable one-step attachment and removal of all the devices.

CRT Computer Monitor

A monitor or display (sometimes called a visual display unit) is an electronic visual display for computers. The monitor comprises the display device, circuitry, and an enclosure. Older monitors use a cathode ray tube (CRT), while the display device in modern monitors is typically a thin film transistor liquid crystal display (TFT-LCD).

The cathode ray tube (CRT) is a vacuum tube containing an electron gun (a source of electrons) and a fluorescent screen, with internal or external means to accelerate and deflect the electron beam, used to create images in the form of light emitted from the fluorescent screen. The image may represent electrical waveforms in (oscilloscope), pictures in (television, computer monitor), radar targets and others.

Rear View of P4 Microprocessor

A microprocessor incorporates most or all of the functions of a computer's central processing unit (CPU) on a single integrated circuit (IC, or microchip). The first microprocessors emerged in the early 1970s and were used for electronic calculators, using binary-coded decimal (BCD) arithmetic on 4-bit words. The rear of a microprocessor are pins. The various pins have their processing functions.


Graphic Card

A video card, video adapter, graphics-accelerator card, display adapter or graphics card is an expansion card whose function is to generate and output images to a display.

Many video cards offer added functions, such as accelerated rendering of 3D scenes and 2D graphics, video capture, TV-tuner adapter, MPEG-2/MPEG-4 decoding, FireWire, light pen, TV output, or the ability to connect multiple monitors (multi-monitor). Other modern high performance video cards are used for more graphically demanding purposes, such as PC games.


IDE or Parallell ATA (PATA)(Parallell Advanced Technology Attachment) Cable

IDE (Integrated Drive Electronics) is a standard electronic interface used between a computer motherboard's data paths. Also known as Parallel ATA (PATA) is an interface standard for the connection of storage devices such as hard disks, solid-state drives, floppy drives, and CD-ROM drives in computers. It uses the underlying AT Attachment (ATA) and AT Attachment Packet Interface (ATAPI) standards.

IDE or Parallel ATA only allows cable lengths up to 18 in (457 mm). Because of this length limit the technology normally appears as an internal computer storage interface. For many years ATA provided the most common and the least expensive interface for this application. By the beginning of 2007, it had largely been replaced by Serial ATA (SATA) in new systems.

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