Knowledge, Information and Experience
LAPTOP💻💻🖱🔌
Notebook and laptop computers are personal computers which unite a display, keyboard, speaker, and tactile directive interface (e.g. touchpad, touchscreen) into a portable unit.
Hardware
Central processing unit (CPU)
The CPU executes commands and is the most critical component of the computer. It consists of the arithmetic logic unit (ALU), which calculates mathematical equations and logic functions, and the control unit (CU), which determines commands and delivers them to the ALU from the computer memory. CPUs designed for laptops are usually more energy efficient and less powerful than CPUs meant for desktops.
History of Laptop:
1971:
As the personal computer (PC) became feasible in 1971, the idea of a portable personal computer soon followed.
1980:
As 8-bit CPU machines became widely accepted, the number of portables increased rapidly. The first laptop-sized notebook computer was the Epson HX-20, invented (patented) by Suwa Seikosha’s Yukio Yokozawa in July 1980.
The portable micro computer Portal of the French company R2E Micral CCMC officially appeared in September 1980 at the Sicob show in Paris.
1981:
The Osborne 1, released in 1981, was a luggable computer that used the Zilog Z80 and weighed 24.5 pounds (11.1 kg).[14] It had no battery, a 5 in (13 cm) cathode ray tube (CRT) screen, and dual 5.25 in (13.3 cm) single-density floppy drives.
1983:
From 1983 onward, several new input techniques were developed and included in laptops, including the touchpad (Gavilan SC, 1983), the pointing stick (IBM ThinkPad 700, 1992), and handwriting recognition (Linus Write-Top, 1987). Some CPUs, such as the 1990 Intel i386SL, were designed to use minimum power to increase battery life of portable computers and were supported by dynamic power management features such as Intel SpeedStep and AMD PowerNow! in some designs.
1988 till 2003:
Displays reached 640×480 (VGA) resolution by 1988 (Compaq SLT/286), and color screens started becoming a common upgrade in 1991, with increases in resolution and screen size occurring frequently until the introduction of 17″ screen laptops in 2003. Hard drives started to be used in portables, encouraged by the introduction of 3.5″ drives in the late 1980s, and became common in laptops starting with the introduction of 2.5″ and smaller drives around 1990; capacities have typically lagged behind physically larger desktop drives. Optical storage, read-only CD-ROM followed by writeable CD and later read-only or writable DVD and Blu-ray players, became common in laptops early in the 2000s.
Important features:
Backlit keyboard, Bluetooth, Biometric security, EMI/RFI shielded, ENERGY STAR, HDMI output, Microphone, Optical drive, RAID, Webcam.
