With the development of computer and electrical systems, different types of demand related to their repair and service emerged. Wires and cables are an inseparable part of a computer.
Computer services are the combination of personal computers and technology to create systems capable of solving computer problems. In other words, installation and maintenance of hardware and software components of a computer network infrastructure.
In 1957, the first artificial satellite named Sputnik was launched from the former Soviet Union. At the same time, the two superpowers of the time also had a fierce competition over the weapons they used.
And the world is during the Cold War. The US Department of Defense created the Advanced Research Projects Agency (ARPA) in response to this action by its military opponents.
An important project for the agency is to provide communications during a possible world war. In these years, efforts have been made to connect computers in civilian research centers.’
At that time, mainframes served users through terminals. Because of the importance of this issue, the ARPA agency (ARPA) took over the funding of the MIT project to connect two computers remotely.
In the late 1960s, the first computer networks were set up between four computers, two at the Massachusetts Institute of Technology, one at the University of California, and one at the Stanford Research Center.
The world today cannot be imagined without the creation of computer networks. We are living in an era and a historical period where virtual space and communication and information exchange based on computer networks are the most important and fundamental issues of our age, perhaps the most important issues.
In this regard, the use of wired networks is undoubtedly one of the most stable network platforms, because a large amount of data transfer takes place in this network infrastructure.
These types of networks have different data transfer rates and bandwidths depending on the type of cables and passive network equipment used next to them. But what is certain is the implementation of structured cabling standards for computer networks.
The efficiency and quality of a computer network depends on the quality of the network infrastructure, i.e. compliance with its wiring and trunk standards. If the installers are inexperienced and do not follow the principles of wiring, the organization will definitely face many problems in the future.
Therefore, by complying with network cable standards, you no longer need to make changes and spend huge costs for network problems or changing the structure of the cable, according to the principles set by standard bodies.
After designing and setting up the network and cabling, only the support and maintenance costs of the equipment are needed, which are very small compared to the initial network setup.
Different types of wires to computer system servicing
Each part of a computer performs different tasks and serves the entire system. In a computer system, wires with various connectors are used to transmit power and data.
Network cable is one of the most common types of cables in computer networks and is widely used for wiring and connecting different devices in a computer network, such as connecting a computer to an Internet modem or networking several different systems.
But there are different types of cables with different names, which makes it a bit difficult and complicated, so maybe not everyone can choose the right type for them.
You are probably familiar with the yellow, blue or red internet cables used to connect modems to the internet. These cables have different types and their main function is to transfer data and information from one device to another.
This data can be media content such as Internet, photos, videos, etc. that are transferred from one device to another or multiple devices. According to their type, network cables are divided into three different types, which are:
twisted pair
The most common type of network cable in local area networks and network equipment is twisted pair cable. This type of cable, also known as LAN cable or Ethernet cable, consists of a pair of plastic insulated wires twisted together, four pairs of these wires together forming a plastic sheathed cable. Insert a plug with RJ45 and connect it
The reason why the wires are braided together is to prevent signal and noise interference in the cable. This type of cable is used to connect a computer to the Internet, create a local network between several computers, and connect two or more devices to transfer information in home and office environments.
Coaxial cable
Coaxial cables are made of copper and have a multilayer structure that makes them resistant to external and environmental conditions. These cables are mainly used to transmit analog and digital signals and are superior to twisted pair cables over long distances.
Probably the most common use of these cables is to use them as TV antenna cables that send their received signal to the TV.
Optical fiber
The third type of network cable is the optical cable, which is structurally different from the other two cables. The basis of fiber optic cables is the transmission of information based on light, in which very small glass wires are used to transmit light waves, not to mention copper wire.
The main advantage of fiber optic cables compared to coaxial and twisted pair cables is their high speed and wider width, which enables faster data transfer. Fiber optic cables are now used for a variety of tasks, especially in connection with fiber optic internet that offers higher speeds than other wired internet services.
Different types of cables to computer system servicing
The cables used in a computer not only serve the entire system by supplying electricity, but also transfer different types of data to different parts. There are different types of computer cables. From VGA cable and internal computer to LAN cable.
Maybe the differences and different types of computer cables confuse you a little and ask the question, what is the difference between SATA or IDE cable? In addition, complete descriptions are not written on the packaging of such products. Therefore, users should know the types before buying computer cables.
In it, there are different types of computer cables, and at the same time e.g. There are so many different ways to connect a video source to a monitor or TV, it’s a bit difficult to find one that explains them all. Below we will introduce you to the most famous and widely used computer cables.
VGA cable
The Video Graphics Array (VGA) cable is one of the first computer cables that was produced in the 1980s and was used to connect the monitor and computer case to display computer data on the screen. Currently, its popularity has declined due to gradual changes in the way digital communication is carried out.
But examples of this type of computer cable can be seen in devices that have a graphic card and are connected to the monitor.
It should be noted that the VGA connector consists of 15 pins arranged in three rows of five. In fact, it is interesting to note that each of these three rows also represents the RGB color system: red, green, and blue.
DVI cable
DVI (Digital Visual Interface) connection cables entered the world of computer connection technology and cables as a replacement for analog connections and VGA cables.
In fact, digital displays such as LCD panels took a step towards higher quality and became a home display in a short period of time. DVI cables are also used to connect computers to these displays. This cable is available in three different models.
DVI-A: carries analog signals and allows these signals to be compatible with DVI. In fact, this type of conversion can be used with older, low-quality CRT or LCD monitors.
DVI-D: Can transmit newer digital signals.
DVI-I: Ability to transmit analog and digital signals.
With that in mind, note that in order to use a DVI cable, you have a device that needs to convert VGA to DVI or DVI to VGA. In this case, this cable will be useful for you.
HDMI cable
The HDMI (High Definition Multimedia Interface) cable is a new interface that transmits audio and video simultaneously. In fact, unlike other computer cables, i.e. VGA or DVI, HDMI can support audio and video.
Since the digital signal is sent through this cable, it can only be used for new devices such as connecting a laptop to a TV. It should be noted that there are four types of HDMI cables, which are:
Type A: This type of HDMI cable is also common and consists of 19 pins on the connector. It is important to note that HDMI type A cables are compatible with DVI-D single-channel digital audio and video cables.
Type B: This type of cable is larger in size than type A, supports 29 pins on the socket, and is compatible with dual-cable DVI-D connections.
Type-C: HDMI Type-C cables consist of a 19-pin connector and are commonly used in devices such as camcorders and digital cameras.
Type D: This type is more similar to today’s USB cables, consisting of a more functional 19-pin connector.
The difference between HDMI and VGA and DVI cables
The VGA cable was first introduced by IBM in 1987 and is widely used in television monitors and graphics cards. It goes without saying that these days these computer cables are rarely used for old devices.
This cable supports 480×640 resolution in 16 colors. But by reducing the resolution, it can support up to 256 colors. As mentioned in the previous two paragraphs, the VGA port consists of 15 pins, whose connector is usually blue and is connected to the desired device using two screws.
A decade later, Digital Display Group introduced the DVI cable in 1999 to replace the VGA cable. As one of the computer cables, DVI can transmit digital video in three different modes, uncompressed, mixed digital and analog, only analog, or only digital.
It should be noted that this cable supports a resolution of 1200 x 960 pixels at a frequency of 60 Hz, and using another digital transmitter will support a resolution of up to 1600 x 2560.
These cables also support VGA ports on older devices to prevent them from being unused. This means that DVI compatible connectors and devices are also compatible with VGA connectors.
HDMI also became a popular cable after its introduction as a type of computer cable and may emerge as a successful interface for digital audio and video equipment.
This cable connects a computer to a digital TV and supports a resolution of 2160 x 4096 pixels, also known as 4K or Ultra HD. With the help of an adapter, HDMI will also be compatible with DVI.
In this case, there was no need to convert the signal, so no quality loss was observed in the observations. It is important to note that unlike HDMI, DVI cables do not support audio.
USB cable
Today, USB (Universal Serial Bus) cables and connectors are known as the most used cables in the world. In fact, in today’s computer systems, a variety of devices such as mice, keyboards, gamepads, headsets, flash drives, wireless adapters, and more can be connected to a computer or laptop via USB.
It is worth mentioning that this type of computer line has been upgraded for years and its collection and functions are more complete.
You can see its speed development below, although each of them can have a different type, which we will discuss in more detail later.
USB 3: This connection supports 4.8 Gbps transfer and will also be backward compatible. Today, it is wrong to use this type of USB in different devices.
Among other things, it can be pointed out that most of today’s computers bring high speed and quality in terms of using USB ports, which is a significant number.
USB 1.0/1.1: Can support 12Mbps transfer speed.
USB 2.0: This type of USB connection can support speeds of up to 480 Mbps and is compatible with older versions of USB. Micro USB, Mini USB and OTG cables are all included in this category. It is worth noting that this type of USB connection will be the slowest type of USB in today’s devices.
It is worth noting that the mini or micro USB type is often used in portable devices such as PAD devices, smartphones and digital cameras. It should be noted that the USB connection standard as mentioned above is used in various devices today.
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