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A PRESENTATION ON

A PRESENTATION ON. CONNECTORS. AND. PORTS …. CONNECTORS. Connector, in computer science, in hardware, a coupler used to join cables or to join a cable to a device—for example, an RS-232-C connector used to join a modem cable to a computer. TYPES OF CONNECTORS. Hard disk activity LED

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A PRESENTATION ON

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  1. A PRESENTATION ON CONNECTORS AND PORTS …

  2. CONNECTORS Connector, in computer science, in hardware, a coupler used to join cables or to join a cable to a device—for example, an RS-232-C connector used to join a modem cable to a computer.

  3. TYPES OF CONNECTORS • Hard disk activity LED • Primary\Secondary IDE connectors • Floppy disk drive connectors • CPU,Chassis and Power Fan connectors • Power supply connectors • Internal audio connectors

  4. HARD DISK ACTIVITY LED The most important indicator on the case, this LED normally flickers on when the hard disk is being accessed. It is important in that it gives you a visual indication of how active your system is, and can help ensure that you don't shut off your system while the hard disk is active. Originally, when PCs had only one hard disk, this LED was connected directly to the hard disk. Newer systems have this LED connected to the motherboard, or the disk controller card. This is preferred because if you have more than one hard disk, the system can activate the light whenever any of them are accessed. Larger cases, especially those designed for use as server PCs, will often have multiple hard disk activity LEDs, to allow separate connection of a number of drives .

  5. PRIMARY\SECONDARY IDE CONNECTORS These connectors connect HDD to motherboard Ultra DMA\100\66 IDE hard disk ribbon cable. The cable’s blue connector is connected to the primary or secondary IDE connector, the gray connector to the Ultra DMA\100\66 slave device and the black connector to the Ultra DMA\100\66 master device.

  6. FLOPPY DISK DRIVE CONNECTORS 4-Pin 2.54mm (0.1) spacing polarized power connector, commonly used on 31/2 floppy disk drives. Supplied complete with connector housing and crimp/solder terminals.

  7. CPU,CHASSIS AN POWER FAN CONNECTORS THE three fan connectors support cooling fans of 150 Ma (4.2 Watts)

  8. POWER SUPPLY CONNECTORS These connectors connect to an ATX 12 V power supply.

  9. INTERNAL AUDIO CONNECTORS These connectors allow to receive stereo audio input from sound sources such as a CD-ROM , TV tuner, or MPEG card. The MODEM connector allows the onboard audio to interface with a voice modem card with a similar connector.

  10. PORTS Port (computer), in computer hardware, a location for passing data in and out of a computing device. Microprocessors have ports for sending and receiving data bits; these ports are usually dedicated locations in memory. Full computer systems have ports for connecting peripheral devices such as printers and modems. In programming, to change a program in order to run it on a different computer; more loosely, to move documents, graphics, and other files from one computer to another.

  11. TYPES OF PORTS • Serial ports • Parallel ports • PS\2 ports • USB ports • SCSI interface

  12. SERIAL PORTS COM (logical device name), in computer science, logical device name for communications; a name reserved by the MS-DOS operating system for up to four serial communications ports named COM1, COM2, COM3, and COM4. (The latter two appear only in MS-DOS versions 3.3 and later.) Thus, if a modem is connected to one serial port and a serial printer to another, the devices are identified as COM1 and COM2 by the operating system. See also MS-DOS, Telecommunications. Also, the extension reserved by MS-DOS for a type of executable binary (program) file limited to a single 64-kilobyte (KB) segment. COM files are often used for utility programs and short routines. They are not supported in OS/2.

  13. PARALLEL PORTS LPT, in computer science, logical device name for line printer; a name reserved by the MS-DOS operating system for up to three parallel printer ports named LPT1, LPT2, and LPT3. LPT1, the first parallel port, is usually the same as the primary MS-DOS hard-copy output device PRN (the logical device name for the printer).

  14. PS\2 PORTS A type of port developed by IBM for connecting a mouse or keyboard to a PC. The PS/2 port supports a mini DIN plug containing just 6 pins. Most PCs have a PS/2 port so that the serial port can be used by another device, such as a modem. The PS/2 port is often called the mouse port.

  15. USB PORTS IN Full Universal Serial Bus  Type of serial bus that allows peripheral devices (disks, modems, printers, digitizers, data gloves, etc.) to be easily connected to a computer. A “plug-and-play” interface, it allows a device to be added without an adapter card and without rebooting the computer (the latter is known as hot-plugging). The USB standard, developed by several major computer and telecommunications companies, supports data-transfer speeds up to 12 megabits per second, multiple data streams, and up to 127 peripherals.

  16. SCSI INTERFACE The second-most popular hard disk interface used in PCs today is the Small Computer Systems Interface, abbreviated SCSI and pronounced "skuzzy". SCSI is a much more advanced interface than its chief competitor, IDE/ATA, and has several advantages over IDE that make it preferable for many situations, usually in higher-end machines. It is far less commonly used than IDE/ATA due to its higher cost and the fact that its advantages are not useful for the typical home or business desktop user.

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