Adata 32GB DDR4 3200MHz Laptop
৳ 17,000 (-26%)
|Number of Pin||260 Pin|
|CAS Latency||CL 19-19-19|
|Others||Module Type: SO-DIMM, Standard: JEDEC, Power Supply: VDD and VDDQ = 1.2V +- 0.06V|
Adata 32GB DDR4 3200MHz Laptop
The laptop computers are smaller and energy efficient. The parts used to make them are expensive. The facilities provided in a laptop computer are similar to that of a desktop computer. Different versions of laptops are available in the market with large screens, high capacity graphic cards etc.
The speciality in laptop computers include light weight and lower energy consumption. Also they are less noisy and easy to handle. Similar to desktop computers the laptop computers include mother board, processor, hard disk, memory, graphic card, keyboard, mouse and display device.ery life etc.
The major benefits of a laptop computer is that it is lighter in weight and can be used while travelling. The disdvantage of a laptop computer is that it does not support for expansion or upgrade. The laptop computers are equiped with built in wireless network cards. It facilitates users to connect to the Internet without a cable.
As the personal computer (PC) became feasible in 1971, the idea of a portable personal computer soon followed. A “personal, portable information manipulator” was imagined by Alan Kay at Xerox PARC in 1968,and described in his 1972 paper as the “Dynabook”. The IBM Special Computer APL Machine Portable (SCAMP) was demonstrated in 1973. This prototype was based on the IBM PALM processor. The IBM 5100, the first commercially available portable computer, appeared in September 1975, and was based on the SCAMP prototype.
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, introduced at the COMDEX computer show in Las Vegas by Japanese company Seiko Epson in 1981, and released in July 1982. It had an LCD screen, a rechargeable battery, and a calculator-size printer, in a 1.6 kg (3.5 lb) chassis, the size of an A4 notebook. It was described as a “laptop” and “notebook” computer in its patent.
The portable micro computer Portal of the French company R2E Micral CCMC officially appeared in September 1980 at the Sicob show in Paris. It was a portable microcomputer designed and marketed by the studies and developments department of R2E Micral at the request of the company CCMC specializing in payroll and accounting. It was based on an Intel 8085 processor, 8-bit, clocked at 2 MHz. It was equipped with a central 64 KB RAM, a keyboard with 58 alphanumeric keys and 11 numeric keys (separate blocks), a 32-character screen, a floppy disk: capacity = 140,000 characters, of a thermal printer: speed = 28 characters / second, an asynchronous channel, asynchronous channel, a 220 V power supply. It weighed 12 kg and its dimensions were 45 × 45 × 15 cm. It provided total mobility. Its operating system was aptly named Prologue.
The Osborne 1, released in 1981, was a luggable computer that used the Zilog Z80 CPU and weighed 24.5 pounds (11.1 kg). 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. Both Tandy/RadioShack and Hewlett-Packard (HP) also produced portable computers of varying designs during this period.] The first laptops using the flip form factor appeared in the early 1980s. The Dulmont Magnum was released in Australia in 1981–82, but was not marketed internationally until 1984–85.
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