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Which is faster serial interface or parallel interface?
It depends on the serial bit rate versus the parallel strobe cycle time but, in general, a parallel interface is faster than a serial interface. However, modern USB, Firewire, and SATA interfaces are very fast, and might be considered faster.
Why usb fast then the perallel port?
USB is faster than a parallel port because it is based on a much faster technology. The bus speed is considerably faster and uses a more user friendly interface.
What is difference between abstract class and interface in core java give brief answer with example?
Differences:Abstract class can also contain method definitions but an interface can contain only declarationsAll variables in an interface are by default public static and final whereas in Abstract class it is notAn interface can be considered as a pure abstract class that contains no method implementations and contains only declarations.
What is faster serial port or parallel port?
parallel port if you want to know why go to it140 if you know what that is.
The EIA-449 interface standard provides a faster data transfer rate than the EIA-449 interface standard?
The RS-422 EIA-449 interface standard provides a faster data transer rate than the RS-423 EIA-449 interace standard.
Serial vs parallel processing?
It is less costly to design ever faster serial lines than to create and build the necessary circuitry to keep faster parallel channels properly aligned. This is why Parallel ATA and Parallel SCSI have migrated to Serial ATA (SATA) and Serial SCSI (SAS).
What is difference between ide sata and scsi hard disk?
For years the parallel interface has been widely used in storage systems. The need for increased bandwidth and flexibility in storage systems made the SCSI and ATA standards an inefficient option. A parallel interface is a channel capable of transferring date in parallel mode - that is transmitting multiple bits simultaneously. Almost all personal computers come with at least one parallel interface. Common parallel interfaces include SCSI and ATA. SCSI(sku4zē) Short for small computer system interface, a parallel interface standard used by Apple Macintosh computers, PCs and many UNIX systems for attaching peripheral devices to computers. Nearly all Apple Macintosh computers, excluding only the earliest Macs and the recent iMac, come with a SCSI port for attaching devices such as disk drives and printers. SCSI interfaces provide for data transmission rates (up to 80 megabytes per second). In addition, you can attach multiple devices to a single SCSI port, so that SCSI is really an I/O bus rather than simply an interface. ATA(Also known as IDE) is a disk drive implementation that integrates the controller on the disk drive itself. ATA is used to connect hard disk drives, CD-ROM drives and similar peripherals and supports 8/16-bit interface that transfer up to 8.3MB/s for ATA-2 and up to 100MB/s (ATA-6). So, what do parallel interfaces have to do with SAS (Serial Attached SCSI) and SATA (Serial ATA)? A lot, actually. It is the architectural limitations of the parallel interfaces that serial technologies like SAS and SATA address. In contrast to multiple parallel data stream, data is transmitted serially, that is in a single steam, by wrapping multiple bits into packets and it is able to move that single stream faster than parallel technology. Serial Attached SCSI (SAS)Abbreviated as SAS, Serial Attached SCSI, an evolution of parallel SCSI into a point-to-point serial peripheral interface in which controllers are linked directly to disk drives. SAS is a performance improvement over traditional SCSI because SAS enables multiple devices (up to 128) of different sizes and types to be connected simultaneously with thinner and longer cables; its full-duplex signal transmission supports 3.0Gb/s. In addition, SAS drives can be hot-plugged. Serial ATA (SATA) Often abbreviated as SATA, Serial ATA is an evolution of the Parallel ATA physical storage interface. Serial ATA is a serial link - a single cable with a minimum of four wires creates a point-to-point connection between devices. Transfer rates for Serial ATA begin at 150MB/s. Starting with SATA, it extends the capabilities of ATA and offers transfer rates starting at 150MB/s and, after years of development, has moved to the mainstream of disk interfaces. The successor the SCSI interface is SAS at speeds of up to 3Gb/s. Additionally, it also addresses parallel interface issues such as drive addressability and limitations on the number of device per port connection. SAS devices can communicate with both SATA and SCSI devices (the backplanes of SAS devices are identical to SATA devices). A key difference between SCSI and SAS devices is the addition in SAS devices of two data ports, each of which resides in a different SAS domain. This enables complete failover redundancy. If one path fails, there is still communication along a separate and independent path. Cables & Connectors Another big advantage of SATA over ATA is the cabling and connectors. The serial interface reduces the amount of wires needed to transmit data, making for much smaller cable size and making it easier to route and install SATA devices. The IDE cables used in parallel ATA systems are bulkier than Serial ATA cables and can only extend to 40cm long, while Serial ATA cables can extend up to one meter. In addition to the cabling, a new design of connectors is also used that reduces the amount of crosstalk between the wires, and the connector design also provides easier routing and better air flow. The Benefits of SAS & SATA in Storage Serial interfaces offer an improvement over older parallel SCSI (with a serial version) in storage applications and environments. These benefits include better performance, better scalability, and also better reliability as the parallel interfaces are at their limits of speed with reliable data transfers. SAS and SATA drives can also operate in the same environment while SCSI and ATA cannot. For example, using faster SAS drives for primary storage and offloading older data to cheaper SATA disks in the same subsystem, something that could not be achieved with SCSI and ATA.
Is The parallel ATA standard faster than the SATA standard?
yes
Is parallel ports always faster than serial ports?
yes
What are the advantages of using parallel cable and connections compared to using coaxial cable?
A parallel cable carries multiple signals while a co-axial cable typically carries a single signal, but that signal can be modulated to carry more than one channel of information. A parallel cable typically carried 8, 16 or even 32 data lines as well as clock and control lines. In the early days of computing parallel interfaces could transfer whole bytes or words simultaneously, so they were frequently faster than the equivalent serial interfaces which were available at that time. Early PCs, data storage devices and digital television equipment made use of high speed parallel connections to offer fast data rates whilst requiring a lot less processing power compared to serial connections. In recent years, local and wide area networking - using wireless links and telephone based connections - have seen major developments in serial interfacing technology to increase overall data throughput, so that today's serial cables and interfaces are much faster than most parallel cable solutions. Furthermore parallel solutions are not compatible with the serial format of wireless and wired Ethernet, so offer little benefit compared to using either co-ax or twisted pair serial cables.
What technology is making IrDA ports obsolete?
In terms of "wireless", IR is being obsoleted by WiFi and Bluetooth. Both of these are radio (wireless) tehnologies that offer faster data rates, potentially greater range (WiFi especially), and freedom from IR's need to have line-of-sight between the computer and the peripheral. In terms of wired connectivity, USB was designed to replace a collection of interfaces such as parallel and serial, and to allow many more kinds of devices to be connected over the USB "bus", and to allow a number of devices to connect over the bus. This was either impossible or much more limited with the older serial and parallel interfaces.
Which has a faster interface to the system an external serial ATA hard drive or a external FireWirehard drive?
external serial ATA is six times faster
