VARIOUS TYPES OF CABLES

VARIOUS TYPES OF CABLES

HDD AND FDD CABLE:

The most common form of HDD cable is 40 Pin IDE cable having 40 wires. A standard IDE cable is a flat ribbon cable, normally gray in color, with a (usually red) stripe running down the edge. The cable has 40 wire connectors in it, and usually has three identical female connectors: one is intended for the IDE controller (or motherboard header for PCs) and the other two are for the master and slave devices on the interface.Another standard is 80 wire 40 pin IDE cable which are compatible with 40 wire IDE

cables. The extra 40 wires are used to reduce the interference.For connection of FDD 34 wires FDD cable is used. The FDD as shown in fig 10.24.

SCSI CABLE

This cable is used to connect the SCSI device to the SCSI controller. This cable is commonly a wide flat cable however may also be a rounded cable. SCSI cables often have multiple connections on a single cable allowing multiple devices to connect to a single controller.dozens of different types of cables.cables are usually ribbon cables multiple 68 pin or 50 pin connectors. External cables are shielded and only have connectors on the ends.

SCSI is different from most PC interfaces in that it supports both internal and external devices. These use drastically different types of cabling, because the environment inside the PC is very different from that outside it. Both internal and external cable come in a variety of styles themselves. some examples are: Twisted pair Wiring, Shielding, and layered structure.

SMART CABLE

Also known as an intelligent cable, a smart cable is a cable that contains built-in circuitry to detect the type of transmission and be able to convert it to another type of transmission. Smart cables may also be a type of cable that converts from one standard into another. For example a cable as shown in fig. that allows a SCSI device to work through USB.

USB CABLE

These USB cables may be used for USB mouse or keyboard cables, USB printers or any other standard USB devices. The maximum speed of USB 2.0 standard is 480 Mbps. For fig and detailed description please refer to USB port in this chapter.

RCA CABLE

The RCA jack uses 75 Ω coaxial cable which are used to transfer Composite video along with stereo audio in three RCA cables. It is also used in S/PDIF interface, component video etc.

The name "RCA" derives from the Radio Corporation of America, which introduced the design by

the early 1940s to allow mono phonograph players to be connected to amplifiers.

SATA

SATA hard-drive technology is based on serial data processing, which means that information traveling from the drive to the data bus is clocked and sent in an orderly fashion.

The SATA cables have 6 pin connectors at both ends and there may be 2, 4 or even more SATA connectors provided on the motherboard and each cable connects to a HDD. Connecting more than one

HDD by SATA does not require any jumper setting for master and slave configuration. SATA hard drives use thin ribbon cables which are a pleasure to work with. The slender cables have "clip on" connectors, which are simple to work with, even in the most cramped corners of the PC case.

PATA

AT Attachment (ATA) and AT Attachment Packet Interface (ATAPI) are interface standards for the connection of storage devices such as hard disks, solid-state drives, and CD-ROM drives in computers.

The current ATA/ATAPI standard is the result of a long history of incremental technical development. ATA/ATAPI is an evolution of the AT Attachment Interface, which was itself evolved in several stages from Western Digital's original Integrated Drive Electronics interface. As a result, many

near-synonyms for ATA/ATAPI and its previous incarnations exist, including abbreviations such as IDE

which are still in common informal use. With the market introduction of Serial ATA in 2003, the original ATA was retroactively renamed Parallel ATA (PATA).

HDMI

HDMI (High-Definition Multimedia Interface) is a compact audio/video interface for transmitting

uncompressed digital data. It represents a digital alternative to consumer analog standards such as Radio Frequency (RF) coaxial cable, composite video, S-Video, component video, and VGA. HDMI connects digital audio/video sources such as set-top boxes, Blu-ray Disc players, personal computers (PCs), video game consoles, and AV receivers to compatible digital audio devices, computer monitors, and digital televisions.

HDMI supports, on a single cable, any TV or PC video format, including standard, enhanced, and high-definition video, up to 8 channels of digital audio, and the Consumer Electronics Control signal. A Digital Visual Interface (DVI) signal is electrically compatible with an HDMI video signal; no signal conversion needs to take place when an adapter is used, and consequently no loss in video quality

occurs.

HDMI devices are manufactured to adhere to various versions of the specification, where each version is given a number such as 1.0, 1.2, or 1.3a. Each subsequent version of the specification uses the same kind of cable but increases the bandwidth and/or capabilities of what can be transmitted over the cable. For example the previous maximum pixel clock rate of HDMI interface was 165 MHz which was sufficient for supporting WUXGA (1920x1200) at 60 Hz. HDMI 1.3 increased that to 340 MHz which allows for higher resolution, such as WQXGA (2560x1600), across a single digital link.

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