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How many devices can you attach to a single serial ata controller?
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∙ 12y ago
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Give an example of a controller that can manage a single IRQ for several devices?
CPU
How many devices can you plug into a serial port?
2:DTE - Data Terminal Equipment - terminalDCE - Data Communication Equipment - modemMost applications of RS-232 break this standard and have different devices connected to the 2 ends, semi-emulating DTEs & DCEs. This semi-emulation usually causes some kind of compatibility problems.
How many devices can a usb port support?
In theory a single hub of USB can support 127 devices. In practice, this will not actually occur. Most computers do not have enough power to drive that many devices. A reasonable number would be about 20.
What is the examples of multimedia devices?
examples of multifunction devices are ipod,iphones,and things like that
What are the advantages of USB over serial ports?
Serial ports are an old endpoint connector style and signal protocol. USB is an end-to-end universal bus architecture. You can't really compare the two directly, but as USB has in practice generally replaced the RS232 serial protocol, there are some similarities in features to be drawn and compared. * SpeedSerial ports transmit a single bit of information every clock cycle. The clock rates range from anywhere between 150 to 119200 at mathematically convenient intervals. (150, 300, 1200, 2400, 4800, 9600, 14400, 28800, 38400 and 57600 have all been common values.) At 119200bps (bits per second), divided by 8 (bits per byte), that's 14900 bytes per second, or roughly 14.5K/s of total bandwidth. To put that in perspective, an average cable Internet speed cap is about 10Mbps, or about 83 times faster. Common network signalling speed is 100Mpbs, or 830 times the potential of a typical serial port. You could not use these services over a serial connection. On the other hand, USB 2.0 is capable of speeds of up to 480Mbps. That's 480 million bits per second. That's roughly four thousand times the maximum potential speed of a serial port clocking at 119200bps. However, the real speed of USB to or from any particular device generally depends on the device itself, other devices connected to the same bus, or other limitations on the host PC. * Connectivity Serial ports primarily feature D-style connectors of either 9 or 25 pins. They're fairly large by today's standards, and even before USB was introduced it was rare for any system to have more than two. Additionally, only a single endpoint device could be plugged into a single serial port (mouse, modem, printer, data line, etc). USB connectors have a total of four (sometimes five) contacts. This allows the plugs and jacks to be very small. USB has a myriad of physical connector styles for many different types of devices, though they're all still USB standard -- they all speak the same language. Additionally, since USB is a bus and not just an endpoint connector, it can be extended via the use of USB hubs to provide additional connectors for additional devices on the same USB connection (up to 256 per host port). * Availability Due to the smaller size of USB connectors, modern computers may feature up to four to eight or more USB ports, with more connections available via USB hubs. Additionally, a great deal of consumer perphierals are now offered as USB devices. Serial ports and serial devices are now usually relegated to legacy hardware or specialized uses. * Power USB ports supply a 5 volt power line in addition to the signalling lines from which some USB devices may draw in order to power themselves, allowing for lower power peripherals to require only a single connector - USB - instead of having additional cords or cables for power as well. This is particularly important in a portability context; most laptop users prefer not to have to carry plug-in power supplies for every peripheral, as well as having to find an electrical outlet for each one. Smaller devices such as USB card readers or even external hard drives can now simply use a single USB plug to be ready for use. This also allows for additional functionality such as charging a device's battery from the USB connector. (In fact, some devices such as certain models of cellular phones have USB plugs specifially for that purpose; they may not actually communicate at all over USB, they're just using the power from a USB connection to charge the batteries, since USB is now so common and highly available.) * Plug and Play and device abstraction The typical usage model of a serial device involved the controlling software sending commands to and from the serial controller chip (UART), which then communicated over the serial line to the device. The system itself didn't generally know exactly what device was plugged in, or even if there was anything plugged in at all. It simply expected a certain protocol to be followed to and from the COM port, depending on what the software was written for. This was in an age before modern multitasking and OS driver models, and led to many serial devices requiring proprietary software to use at all, which in turn led to many compatibility issues as systems advanced over time and controlling software was not updated, making the device itself unusable. The nature of the USB architecture and the more modern nature of it's controlling hardware allows for USB devices to be added or removed on the fly, and the devices themselves to be directly detected by the host system and, if necessary, drivers installed, just like any other piece of system hardware. The device can then be univerally used in the operating system and with any software designed to operate that class of device (input, audio, storage, etc).
Give an example of a controller that can manage a single IRQ for several devices?
CPU
How many devices can be daisy chained on a single standard SCSI controller?
Most modern SCSI buses support a total of 16 devices, while older SCSI implementations usually support only eight devices.
How many wires in a EIDE cable?
A maximum of two devices can be placed on an EIDE / PATA cable. Not all cables will include two connectors for doing so, though.
How many devices can you plug into a serial port?
2:DTE - Data Terminal Equipment - terminalDCE - Data Communication Equipment - modemMost applications of RS-232 break this standard and have different devices connected to the 2 ends, semi-emulating DTEs & DCEs. This semi-emulation usually causes some kind of compatibility problems.
How many devices does the serial port supports?
This question is too vague to give a specific answer to. Do you mean the old COM port of a PC? If so, this is an RS232 type port which is "point to point" - in other words you can only connect one device to it. There are many other serial interfacing technologies, some of which support many devices attached to one port - e.g. RS485 which is a multidrop bus and can have many devices connected to one pair of wires. Modern interfaces like USB are also serial in nature. USB can support up to 127 devices on a multilevel connection structure, but you can still only connect one pair of devices on a single wire. To attach more devices use a USB hub (or lots of them). Standard USB hubs spread one connection to either 4 or seven downstream ports.
What tecnology does Stix 200 Single Controller use?
Stix 200 Single Controlle is a wireless motion sensitive controller.
Difference between avr micro controller and 8051 micro controller?
constructed on a single chip is called micro processor constructed on a single board is called micro controller
How many IDE devices can you have?
Short answer: Four A much more precise answer: The IDE standard allows for two devices to share a single IDE channel. The most common configuration is for there to be two IDE channels on the motherboard, allowing for a total of four devices. It is possible however, to add more IDE channels, usually in the form of PCI add-on IDE controller cards and have literally dozens of IDE devices in a single computer system.
Does serial processing use a large network of computers?
Not necessarily. Serial processing could be done on a single computer.Not necessarily. Serial processing could be done on a single computer.Not necessarily. Serial processing could be done on a single computer.Not necessarily. Serial processing could be done on a single computer.Not necessarily. Serial processing could be done on a single computer.Not necessarily. Serial processing could be done on a single computer.Not necessarily. Serial processing could be done on a single computer.Not necessarily. Serial processing could be done on a single computer.Not necessarily. Serial processing could be done on a single computer.Not necessarily. Serial processing could be done on a single computer.Not necessarily. Serial processing could be done on a single computer.
How many devices can be used on a single SCSI bus?
8 Devices can be used on a single SCSI bus.
How many devices can a usb port support?
In theory a single hub of USB can support 127 devices. In practice, this will not actually occur. Most computers do not have enough power to drive that many devices. A reasonable number would be about 20.
Does a new PS3 come with a controller?
Yes a PS3 comes with a single controller except for the $349.99 PS3 320 GB + Move Bundle system that has a DualShock 3 Controller and a PS3 Move Controller
