There are two types of digital interface to consider I use a USB serial port for RS communications all the time on my projects RS since it is a very useful standard communication module which can be found built-into PICs and most other microcontrollers.
Computers used to come with RS and parallel port built-in as standard, but not any more as new computers have USB ports instead. The digital serial unit does away with all RS comms and cables and outputs only digital signals. This is the generates the same as the signals that you get at the microcontroller, after they are decoded at the MAX chip. The disadvantage is that you do not get noise immunity over long distance which the the RS interface does provide, but this is not a problem when working directly beside the units as I do.
I use the digital serial all the time. This is the one I use - if you move the connectors a lot you can buy new duponts to replace them - it also as a low power 5V and 3V output for very simple circuits and it installs without a disk!
It also has a couple of LEDs on board shown when comms is active - sometimes useful. Search for above text on ebay. There are bound to be others available if you can not see that exact one.
Since RS voltage levels are generated it will allow operation over long cables. There are bound to be others available if you can not see that exact one.. Im a Fan of Premier League. Pls, advise on d best one and how i can get it. I want to get it frm you. Tosin, you should be able to decide on your own. If you ask me, i will always say you should renew both. I have tried with Etisalat, MTN and Airtel, it is only mtn that stays and the data led blinks red at intervals What can i do.
Oga lemmy, I loaded some G1 super account and after loading it restarts itself. Pls any solution? My azsky did t work wt xii. Option is their evrytin is ok. Pls solution sir oga lemmy. Helllooo mr morgan I sent u a mail 3 times but no reply. Mr Lemmy good evening. I accidentally deleted all biss key entries.
What danger does it pose to my Qsat? Can I recover the deleted pre-loaded biss? Do you have an idea on the problem. This article came a day late. I just recharged my G6 yesterday at alaba friday and the guy used a laptop to do it and the application used is the same as the pic displayed above. Weeeeeell done I salute your courage. I love this and I have been researching on this thank you for liberating me. Pls how much is the bafo bf adapter?
As I write now at least I can talk for Ghana. Qsat is totally down even with CCCam account. Hi lemmy! Was able to troubleshoot the problem by switching off avatarcam and using only cccam account. Azsky super n qsat not working or showing any channel from yesterday night.. Oga lemmy, how do we get this BAFO-cable? What is the cost? There are a plethora of ports that connect these devices to the computer, for example, the well-known USB port.
To fully understand how to install, configure, and troubleshoot input, output, and multimedia devices, you need to know the ports like the back of your hand.
In this chapter you learn about serial, parallel, SCSI, USB, sound, and FireWire ports and their corresponding devices; the goal is to make you proficient with the various interfaces you see in the IT field.
The word 'port' is used often in the computer industry, and has many different meanings depending on what technology is being referred to. This hardware could be internal or external. The ports are associated with copper circuits and memory ranges that allow the communication of data between the CPU, RAM, and the ports themselves. Most recent desktop systems have at least four USB ports, and many systems support as many as eight or more front- and rear-mounted USB ports.
Figure shows the rear panel of a typical ATX system, including USB and other port types discussed in this chapter. Cables that are Series A—to—Series A or Series B—to—Series B are used to extend standard cables, and can cause problems if the combined length of the cables exceeds recommended distances.
USB 1. USB 2. USB 3. USB packaging and device markings frequently use the official logos shown in Figure to distinguish the different versions of USB in common use. Note that the industry is shifting from using the term 'USB 2. With either version of USB, a single USB port on an add-on card or motherboard is designed to handle up to devices through the use of multiport hubs and daisy-chaining hubs.
Starting with Windows 98, USB devices are Plug and Play PnP devices that are hot swappable can be connected and disconnected without turning off the system.
The maximum length for a cable attached to 12Mbps or Mbps USB devices is five meters, whereas the maximum length for low-speed 1. A root hub supports two USB ports. In Figure , there are two root hubs listed, indicating that the system has four USB ports.
You can access the Device Manager by clicking Start , right-clicking Computer or My Computer in older Windows operating systems , and selecting Manage. The Computer Management window opens, and the Device Manager is located there.
You can also access Device Manager from the Control Panel. Note the fork-shaped USB logo next to the category and each device.
Some motherboards have USB header cable connectors, which enable you to make additional USB ports available on the rear or front of the computer. Some motherboard vendors include these header cables with the motherboard, whereas others require you to purchase them separately.
Some recent case designs also include front-mounted USB ports, which can also be connected to the motherboard.
Because of vendor-specific differences in how motherboards implement header cables, the header cable might use separate connectors for each signal instead of the more common single connector for all signals.
There are two types of generic hubs:. Bus-powered hubs might be built into other devices, such as monitors and keyboards, or can be standalone devices. Different USB devices use different amounts of power, and some devices require more power than others do.
A bus-powered hub provides no more than milliamps mA of power to each device connected to it. Thus, some devices fail when connected to a bus-powered hub. A self-powered hub, on the other hand, has its own power source; it plugs into an AC wall outlet.
It can provide up to mA of power to each device connected to it. A self-powered hub supports a wider range of USB devices, so it is recommended that you use it instead of a bus-powered hub whenever possible. You can also add USB ports by way of an expansion card. If you have a free slot in the computer, and know what type of slot it is, you can easily snap in an adapter card that has an additional two, four, or eight USB ports. The key is to make sure that the adapter card is completely compatible with the expansion slot on the motherboard.
We talk more about expansion cards and slots in Chapter 4, 'Motherboards and Buses. The serial port, also known as RS or COM communication ports, historically has rivaled the parallel port in versatility see Figure Because USB ports provide greater speed than serial ports and support multiple devices connected to a single port via hubs, it's no wonder that USB is by far the most commonly used port on a PC, and many devices that were formerly connected to serial ports now utilize USB ports.
Either type can be adapted to the other connector type with a low-cost adapter see Figure
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