Laptop Information

Laptop

Laptop It is a portable computer or laptop is a mobile personal computer, its weight is usually between 1 and 3 Kg. These are capable of performing most of the tasks performed by desktop computers, with the advantage that they are more Small, lighter and have the ability to operate for a certain period without being connected to electricity.

History

The Epson HX-20 was the first computer considered portable, developed in 1981, from which the great benefits for the work of scientists, military, businessmen and other professionals who saw the advantage of being able to take their computer with them were observed With all the information they needed.

The Osborne-1 was first shown at the California West Coast Computer Fair in April 1981. Its memory was 64K, it had a 25 x 52 character monochromatic screen that measured 5 inches and had two units 5.25-inch disk (the disks could store up to 91K each). It had an RS-232 serial port, a modem port and a removable keyboard. Its dimensions were: 32.5 x 50 x 36.5 cms, and despite having a weight of almost 13 kilograms it is considered as the first laptop in history and its launch revolutionized the personal computer market in the world. In 1991 Apple released its portable model, which became the standard for the rest of those that have been released since then.

In 1995, with the arrival of Windows 95, the sale of laptops increased significantly, and currently exceeds sales of desktop PCs.

Components

Many of the components of a laptop are similar to the components of desktop computers, but are usually smaller, with similar components, some of which are cited below:

Low power CPU

2.5-inch or less hard drive

RAM Memory Modules SO DIMM (Small Outline DIMM)

Small format CD or DVD reader and writer

Integrated keyboard

Integrated screen type TFT, WXGA or OLED that in turn performs the function of the laptop lid and facilitates its mobility

Touchpad or trackpad touch panel to handle the pointer instead of the mouse

Charger (can be charged in use, to optimize time and energy)

Battery, typically 2 to 4 hours long.

characteristics

They work using a battery or an adapter that allows both to charge the battery and provide power. They have a small battery that allows to keep the clock and other data in case of lack of power.

They usually have an LCD screen and a touchpad. In general, they have PC Card (formerly PCMCIA) or ExpressCard for expansion cards. There is a type of notebook called netbooks, which are smaller and lighter, M 570E

There is not yet a standard industrial form factor for notebooks, that is, each manufacturer has its own design and construction style. This increases the prices of the components in case they have to be replaced or repaired, and makes them more difficult to achieve. There are often incompatibilities between notebook components from the same manufacturer.

Manufacturers and Brands

Many brands, including the most important, do not design and manufacture their laptops. Instead, a small number of original design manufacturers (ODM) design new models of laptops, and brands choose the models that will be included in their alignment. In 2006, seven major ODMs manufactured 7 out of 10 laptops in the world, with the largest (Quanta Computer) having a 30% global market share. Therefore, they are often identical models available to both a multinational and a local low-profile ODM company. The vast majority of laptops on the market are manufactured by a handful of original design manufacturers (ODM). The most important are:

The largest manufacturer of laptops in the world.

Wistron Corporation (manufacturing and former design division of Acer) sells to HP / Compaq, Dell, IBM, NEC, Acer, Lenovo and IBM /.

Flextronics (former Arima Computing Division of Laptops Corporation) sells to HP / Compaq, NEC, and Dell.

ECS sells to IBM, Fujitsu and Dell.

Asus sells to Apple (iBook), Sony and Samsung.

Uniwill sells to Lenovo / IBM and Fujitsu, and PC World UK own Advent brand

Advantage

Its great advantage lies in the mobility that they allow, since it is possible to take them wherever they want. Laptops can also perform the same functions as any other computer and usually consume less power and are quieter.

Possible risks

Sterility

Working with the laptop on the legs can cause sterility in men, it gets very hot if the use time is prolonged. In vitro studies show that putting the laptop in your lap while connected to the Internet could cause sperm damage at various levels as they emit a minimum of electromagnetic wave radiation and connecting to Wi-Fi increases between 5 and 6 Sometimes this radiation.

Sperm are produced in the testicles and these are outside the body to maintain a lower temperature than the rest of the body, since the cells responsible for giving rise to sperm do not work well at elevated temperatures. They are very sensitive to temperature. That is, the function of the testicles can be affected with the excessive heat generated. Only sperm production is affected, but not in the production of male hormones, that is, you will not look more feminine or anything unusual, only that your fertility will be affected.

The heat generated by laptops can cause skin blemishes, a condition called "roasted skin syndrome." This syndrome apparently was popular among people who gathered around fires or heaters to heat up, and now it has returned from the hand of technology.

Possible solution

A possible solution is to place a thick pillow on the legs and place the laptop on top, this reduces heat transmission and therefore reduces the risk of sterility. Although it is best to use a desk.