There are various types of cables in the world, all for different purposes. From electronic devices, mechanical lifting to telephone communications, all make use of different types of cables. The invention of cables came after the invention of ropes. Ropes made of several strands of fibers such as hemp have been around for ages and had been used for hoisting in the early days. As the world progressed, the demand for stronger cables also grew. That is when steel cables came about and from then on, wire ropes became very common in industrial processes. It was then that electrical cables also came about.
Cables are present in every electronic device. We come across cables everyday and surely we all had problems with entangled cables of computers, televisions and earphones. Cables are an important part of life as without them, electronics would not run and life without electronics would just not be the same. A cable, in electronics, often comprises of two or more wires that can be bonded, twisted or braided to form one single piece of wire. To keep the cables insulated, they are usually covered with clot or rubber to prevent electric shock. The reason why electrical cables are braided is because they tend to be more flexible when they are twisted together as compared to when they are individual pieces. However, not all cables are required to be twisted as some metals are naturally soft such as copper.
A new type of technology that has been discovered is the fiber optic cables. These cables make use of the reflective index of the fiber to transfer data from one place to another. The advantage of using these cables is that transfer has been much faster as compared to regular metal cables. Some uses of fiber cables can be in data storage where they are used to transfer data such as the internet you use at home. They can even be used for imaging and taking picture of areas that are hard to reach such as in medical operations.