A laptop, a portable computer or a laptop is a personal computer, its weight is usually 1 to 3 Kg. These can perform most of the tasks that desktop computers perform, the advantage is that they are smaller, lighter and have the ability to work for a certain time without being connected to electricity.
The Epson HX-20 was the first portable computer developed in 1981, with great benefits for the work of scientists, military, businessmen and other professionals who saw the advantage of carrying their computers with them.
Osborne-1 was first shown at the California West Coast Computer Show in April 1981. It had a 25 x 52-character monochrome display with a memory of 64K, 5 inches long and two 5.25-inch disk drives. It had an RS-232 serial port, modem port, and a removable keyboard.
Its dimensions were: Despite 32.5 x 50 x 36.5 cm and almost 13 kilograms of weight, it is considered the first Laptop in history, and its release revolutionized the world of personal computers worldwide. In 1991, Apple released the Laptop model, which has since become the standard for the rest of those released.
In 1995, with the arrival of Windows 95, the sale of Laptop computers has increased significantly and now exceeds the sales of desktop computers.
Many of the components of a Laptop are similar to those of desktop computers, but some are generally smaller than the components listed below:
- Low power CPU
- 2.5 inch or smaller hard drive
- RAM SO DIMM Memory Modules
- Reduced format: CD or DVD reader and writer
- Integrated keyboard
- Integrated TFT, WXGA or OLED display that performs the function of the cover of the laptop and facilitates mobility.
- Touchpad or trackpad touchpad to operate the pointer instead of a mouse.
- Charger (rechargeable in use, to optimize time and energy).
- The battery is typically 2 to 4 hours long.
They work using a battery or an adapter that allows both to charge and power the battery. They have a small battery that allows you to keep the watch and other data in case of power failure.
They usually have LCD screens and touchpads. Generally, there is a PC Card (formerly PCMCIA) or ExpressCard for expansion cards. There is a smaller and lighter type of Laptop called Netbook.
There is no standard industrial form factor for laptop computers yet, so each manufacturer has its own design and construction style. This increases the prices of the components when they need to be replaced or repaired, making them difficult to obtain. Even incompatibilities often exist between the laptop components of the same manufacturer.
Manufacturers and Brands
Many brands, including major brands, do not design and manufacture Laptop computers. Instead, a small number of original design manufacturers (ODM) are designing new Laptop models and brands are choosing models to be included in their series.
In 2006, seven major companies produced 7 out of 10 laptops in the world, the largest of which had a 30% global market share. Therefore, they are often identical models available for a multinational and low profile locally branded ODM company.
The vast majority of Laptop computers on the market are produced by a handful of original design (ODM) manufacturers. Most important ones:
- Quanta sells to HP/Compaq, Dell, Toshiba, Sony, Fujitsu, Acer, NEC, Gateway and Lenovo/IBM.
- Compal sells to Toshiba, HP/Compaq, Acer, and Dell.
- Wistron Corporation sells to HP/Compaq, Dell, IBM, NEC, Acer, Lenovo, and IBM.
- Flextronics sells to HP/Compaq, NEC, and Dell.
- ECS sells to IBM, Fujitsu, and Dell.
- Asus Apple (iBook) sells to Sony and Samsung.
- Inventec sells to HP/Compaq, Toshiba, and BenQ.
- Uniwill, Lenovo/IBM, and Fujitsu and PC World UK are selling under their own brand.
Its major advantage is based on its mobility feature because it is possible to take it anywhere you want. Laptops can also perform the same functions as other computers and generally consume less power and are quieter.
Using laptop computers on the knees for a long time creates excessive heat.
Some studies show that putting the laptop on your lap while connected to the Internet can damage various levels of sperm, as they emit minimal electromagnetic wave radiation, and connecting to Wi-Fi increases 5 to 6 times that radiation.
The heat produced by laptops can cause skin blemishes, a condition called skin syndrome.
You can use your computer with a cooler on your knees to troubleshoot laptop use issues like this. The best solution is to use a Laptop on the table.
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