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A speaker is an electronic device that converts electrical signals into sound waves. The first speaker was invented by Alexander Graham Bell in 1876. Bell's speaker used a paper diaphragm attached to an electromagnet to produce sound. Early Speakers Terbuka di jendela baru americanhistory.si.edu Alexander Graham Bell's speaker In 1898, Oliver Lodge invented a speaker that used a metal diaphragm. Lodge's speaker was more efficient than Bell's speaker and could produce louder sounds. Terbuka di jendela baru es.m.wikipedia.org Oliver Lodge's speaker In 1925, Chester Rice and Edward Kellogg invented a speaker that used a voice coil. The Rice-Kellogg speaker was more efficient than Lodge's speaker and could produce clearer sounds. Terbuka di jendela baru es.m.wikipedia.org RiceKellogg speaker The Rise of Speakers In the 1930s, speakers began to be widely used in radios and other electronic devices. Speakers continued to develop as technology developed. In the 1950s, ...

A fan is a device that is used to create airflow. Fans can be used to cool a room, remove humidity, or simply create a more comfortable atmosphere. The first fan was invented by an American inventor named Schuyler Skaats Wheeler in 1882. Wheeler's fan used an electric motor to drive a propeller. This fan had a simple design, with propellers made of wood and an electric motor made of iron. In 1891, another American inventor named Philip H. Diehl created a more practical fan. Diehl's fan had a more compact design and was easier to clean. It also used a more efficient electric motor. Terbuka di jendela baru chevron_right en.wikipedia.org Schuyler Skaats Wheeler's fan In the early 20th century, fans began to become popular in the United States. Fans were commonly used in homes and offices to cool rooms. As technology progressed, fans also evolved. In the 1920s, fans began to use propellers made of metal. Metal propellers are stronger and more durable than wooden propellers. Ter...

In the early 1990s, there were many different interfaces for connecting peripherals to computers, each with its own limitations and incompatibilities. This made it cumbersome and difficult to connect devices to computers. For example, the PS/2 connector was used to connect keyboards and mice, but this connector could only be used for one device per port. The serial connector was used to connect other devices, such as printers and modems, but this connector had slow data transfer speeds. To address these issues, a group of seven companies, including Intel, Microsoft, IBM, Compaq, Digital Equipment Corporation, NEC, and Philips, formed a consortium to develop a new standard for connecting peripherals. This group was called the USB Implementers Forum (USB-IF). The USB-IF worked for several years to develop the specifications for USB, which were released in 1996. These specifications established standards for connectors, cables, and communication protocols for connecting peripherals to com...

TWS, or True Wireless Stereo, is a wireless audio device consisting of two earbuds that connect wirelessly to a source device, such as a smartphone or computer. TWS was first introduced in 2016 by Apple under the name AirPods. Before that, there were already a few wireless audio devices consisting of two earbuds, but these devices still had a cable connecting the left and right earbuds. These devices also typically had large and uncomfortable designs. AirPods were the first truly wireless TWS device, with no cable connecting the left and right earbuds. AirPods also had a small and comfortable design. The launch of AirPods by Apple marked the beginning of the popularity of TWS. Since then, many other companies have begun producing TWS devices. Figure 1: AirPods TWS Terbuka di jendela baru www.indiamart.com AirPods TWS This figure shows the AirPods TWS, one of the first TWS devices introduced by Apple. The AirPods TWS consists of two earbuds that connect wirelessly to a source device, su...