Laptop a portable personal computer , in the case which combined the typical components of a PC, including screen , keyboard and pointing device (usually the touch pad or touch pad ), handheld computer, as well as rechargeable batteries . Laptop is small in size and weight, battery life of laptops varies from 1 to 15 hours.
For laptops are usually related to laptops made in the clamshell form factor . Laptop carry when folded, it can protect the screen, keyboard and touchpad in transit. It is also associated with the convenience of transportation (usually a laptop is transported in the portfolio that allows us not to keep it in your hands and hang on the shoulder, for example).
The idea of a portable computer, "the size of a notebook that has a flat screen and able to connect to the network without wires "put forward a firm head of research laboratory Xerox Alan Kay (Alan Key) in 1968.
In 1979 , the commissioned by NASA , William Mogridzh (company Grid Systems) has created the world's first laptop Grid Compass (the RAM on the bubble size 340 KB Processor Intel 8086 processor with a clock frequency of 8 MHz, the phosphor screen). This laptop was used in the program, Space Shuttle .
The first civic model of the Osborne 1 (weight 11 kg, RAM 64KB, Zilog Z80A processor with a clock frequency of 4 MHz, the two drive 5.25 -inch , three ports, including those for connecting a modem, monochrome display is 8.75 x 6, 6 cm; housed 24 lines of 52 characters, 69 keys) was founded by Adam Osborne, an inventor (Adam Osborne) in 1981 and released to the market at a price of $ 1795. From a marketing mistake, which consisted in the fact that the beginning of the subsequent sales of the model Osborne Vixen, it was announced long before the realization of revenue vehicles (and it hit the sales Osborne 1 ), the company went bankrupt.
In 1982 the company Compaq has successfully introduced the IBM PC -compatible laptop computer on the basis of processor Intel 8080 . Since 1983 , the Many computer makers have had their own line of notebooks (such as Epson HX-20 ). In 1984 , the company Apple released the first laptop with LCD . In 1986 , the IBM introduced the first "convertible" model laptop with a processor Intel (weight 5.4 kg, 3.5-inch floppy drive) for $ 3500.
In 1990 , the Intel had introduced the first dedicated mobile processor - Intel386 SL, as well as the technology has been proposed to reduce the supply voltage, increase the service life of batteries .
Portable computers are capable of performing the same tasks that desktop computers, although at the same price, the performance of the laptop will be much lower. Laptops contain components similar to those installed in desktop computers and perform the same function, but miniaturized and optimized for mobile use and efficient power consumption.
Also, by connecting a laptop (with TV-Out connector or HDMI ) to TV and / or audio, you can use it as a multimedia home entertainment center ( Multimedia Station ). To do this, some of them are equipped with remote controls (eg HP Series Pavillion).
There are so many kinds of laptop,in which some are:
: Replacement of desktop PC (Desktop Replacement)
: Laptops with screen sizes 14 - 16 inches
:Subnotebooks
: Ultraportable Laptop
: Netbook
:Budget laptops
:Laptops middle class
: Business Laptops
: Multimedia Notebook
: Gaming Notebook
: Mobile Workstation
: Ambient laptops
: Rugged Notebooks
: Laptop with touchscreen (tablet PC)
As laptop manufacturers often perform the following companies:
Compal: Makes some of the models Acer, Dell, Toshiba, Hewlett-Packard, etc.
Clevo: Produces popular gaming laptops.
Falcon Northwest: Hi-end laptops.
Computer quanta:A major Taiwanese manufacturer (for Sony, Lenovo, Hewlett Packard, Apple).
Sager: Powerful laptops.
Uniwill:Notebook ECS .
