Household projectors, often referred to as micro projectors, are commonly used in homes and similar settings. These devices, also known as consumer electronics or household appliances, have evolved significantly over time. The United States has played a key role in the development of these appliances. In 1879, Thomas Edison invented the incandescent light bulb, marking the beginning of the era of electric home appliances. At the start of the 20th century, the introduction of the electric iron by E. Richardson opened the door for a wave of new household appliances, such as vacuum cleaners, washing machines, refrigerators, stoves, air conditioners, and fully automatic washing machines.
In the 1880s, the discovery of the Edison effect and experiments confirming the existence of electromagnetic waves laid the foundation for electronic technology. By the early 1900s, countries like the UK and the US began developing the first generation of electronic devices—electron tubes. The invention of the superheterodyne receiver in 1919 paved the way for radio development. From 1923 to 1924, Vladimir Zworykin in the US developed the camera tube and picture tube, leading to the creation of the world's first fully electronic TV system in 1931. Color television was introduced in the US in 1954. Magnetic tape recorders appeared as early as 1898, with cassette recorders becoming popular after Philips introduced cassette tapes in 1963. The invention of integrated circuits brought electronics into the microelectronics era, greatly enhancing the performance of home appliances.
The classification of household appliances varies globally, but it is common to categorize them based on their functions. Typically, they are divided into eight main groups: 1) Refrigeration appliances (e.g., refrigerators, ice makers), 2) Air conditioning appliances (e.g., air conditioners, fans, dehumidifiers), 3) Cleaning appliances (e.g., washing machines, vacuum cleaners), 4) Kitchen appliances (e.g., microwave ovens, rice cookers), 5) Electric heating appliances (e.g., electric blankets, space heaters), 6) Personal care appliances (e.g., hair dryers, electric razors), 7) Audio-visual appliances (e.g., projectors, TVs), and 8) Other electrical appliances (e.g., smoke detectors, doorbells).
With rising living standards, water purifiers have become an essential part of modern households. As global water sources face serious pollution and shortages, traditional tap water treatment methods are no longer sufficient to ensure clean drinking water. Issues like secondary contamination from aging pipelines, rust, sediment, and microorganisms have led to the growing demand for water purification systems. Various brands now offer different filtration technologies, and domestically produced brands like Natural & Beautiful meet national drinking water standards, providing safe and reliable solutions for families.
Household appliances, commonly known as home appliances, are devices powered by electricity or mechanical energy to assist with daily tasks like food preservation, cleaning, and more. They are not only used in homes but also in offices and industrial environments. Broadly speaking, they are categorized into large appliances (white goods and black goods) and small appliances. Their evolution continues to shape modern life, making everyday tasks easier and more efficient.
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