when was the first laptop invented and by whom
July 1980 Yukio Yokozawa
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 widely released in 1982. It had an LCD screen, a rechargeable battery, and a calculator-size printer, in a 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
Laptop
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 widely released in 1982. It had an LCD screen, a rechargeable battery, and a calculator-size printer, in a 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
Laptop
Epson HX-20 The Epson HX-20 (also known as the HC-20) was the first laptop computer. It was invented in July 1980 by Yukio Yokozawa, who worked for Suwa Seikosha, a branch of Japanese company Seiko (now Seiko Epson), receiving a patent for the invention. It was announced in 1981 as the HC-20 in Japan, and was introduced by Epson in North America as the HX-20 in 1981, at the COMDEX computer show in Las Vegas, where it drew significant attention for its portability. It had a mass-market release in July 1982, as the HC-20 in Japan and as the Epson
Epson HX-20
from an original battery. It can also work with a lantern battery on alligator clips. Epson HX-20 The Epson HX-20 (also known as the HC-20) was the first laptop computer. It was invented in July 1980 by Yukio Yokozawa, who worked for Suwa Seikosha, a branch of Japanese company Seiko (now Seiko Epson), receiving a patent for the invention. It was announced in 1981 as the HC-20 in Japan, and was introduced by Epson in North America as the HX-20 in 1981, at the COMDEX computer show in Las Vegas, where it drew significant attention for its portability. It had
Epson HX-20
units (CPU) at the time. The 7220's high resolution color graphics led NEC to market it as a "resolution revolution". By 1983, it was used in NEC's APC computers, and other computers from Digital Equipment Corporation and Wang Laboratories. The 7220 and its clones led the early GPU market for several years, and was still the best known GPU in 1986. It was eventually surpassed by the more powerful Hitachi HD63484 ACRTC, released in 1984. Yukio Yokozawa, an employee for Suwa Seikosha, a branch of Seiko (now Seiko Epson), invented the first laptop (notebook) computer in July 1980, receiving a
History of science and technology in Japan
Cardiolipin Cardiolipin (IUPAC name "1,3-bis("sn"-3’-phosphatidyl)-"sn"-glycerol")(also known as Calcutta Antigen) is an important component of the inner mitochondrial membrane, where it constitutes about 20% of the total lipid composition. It can also be found in the membranes of most bacteria. The name 'cardiolipin' is derived from the fact that it was first found in animal hearts. It was first isolated from beef heart in the early 1940s. In mammalian cells, but also in plant cells, cardiolipin (CL) is found almost exclusively in the inner mitochondrial membrane where it is essential for the optimal function of numerous enzymes that are involved in
Cardiolipin
the distance between double stars. Filar micrometers are little used in modern astronomy, having been replaced by digital photographic techniques where digital pixels provide a precise reference for image distance. However, filar eyepieces are still used in teaching astronomy and by some amateur astronomers. The precursor to the filar micrometer was the micrometer eyepiece, invented by William Gascoigne. Earlier measures of angular distances relied on inserting into the eyepiece a thin metal sheet cut in the shape of a narrow, isosceles triangle. The sheet was pushed into the eyepiece until the two adjacent edges of the metal sheet simultaneously occulted
Filar micrometer
, and then as 357th (Lowland) Field Regiment, Royal Artillery, in the postwar TA until it disappeared in a succession of amalgamations during 1956–61. The uniform of the original 3rd Edinburgh RVC was scarlet tunics with blue facings, blue trousers with a broad scarlet stripe, and blue shakoes with a red-and-white ball tuft, later replaced by a scarlet upright horsehair plume. The British League Cadet Corps wore red Garibaldi shirts, blue forage caps and knickerbockers, and brown canvas leggings. In 1882 the renumbered 2nd Edinburgh RVC adopted blue helmets in place of shakoes. After it became the 4th VB Royal
6th Battalion, Royal Scots
monkey or ship's boy before being discharged as a servant to one of the gunners. In 2006, Susan Cooper wrote a novel titled "Victory" partly based on the life of Samuel Robbins. In the book Sam and his uncle were forced into the navy by a press gang. In reality, Sam may have been a volunteer, and it is unlikely that Sam would have served with his uncle. Samuel Robbins Samuel Robbins (c. 1790 - after 14 January 1806) was a member of the crew of HMS Victory at the Battle of Trafalgar. Robbins was born in London, England and
Samuel Robbins
officially became a part of the 327). Numerous intense fights erupted along the 327 sector including two brutal fights at Marvie and more to the west in the 401 section. The Germans attacking were of the Volksgrenadiers and the elite tank-based Panzer Lehr. At Marvie the 327 was outnumbered by 15 to 1. Facing only two US companies, G Company, supported by several tanks from the 10th Armored Division and E Company in reserve, the German commander took his whole division further west. At Marvie, the Germans lost six tanks and several half tracks. One tank did break into Marvie,
327th Infantry Regiment (United States)
He was probably the first to give the element "zinc" ("zincum") its modern name, in about 1526, likely based on the sharp pointed appearance of its crystals after smelting ("zinke" translating to "pointed" in German). Paracelsus invented chemical therapy, chemical urinalysis, and suggested a biochemical theory of digestion. Paracelsus used chemistry and chemical analogies in his teachings to medical students and to the medical establishment, many of whom found them objectionable. Paracelsus in the beginning of the sixteenth century had unknowingly observed hydrogen as he noted that in reaction when acids attack metals, gas was a by-product. Later, Théodore de
Paracelsus
Fair in Chicago, Illinois under the name of Lavadora but was changed to Lavaplatos as another machine invented in 1858 already held that name. This machine is what everyone now knows as the washing machine. Cochrane's inspiration was her frustration at the damage to her good china that occurred when her servants handled it during cleaning. Europe's first domestic dishwasher with an electric motor was invented and manufactured by Miele in 1929. In the United Kingdom, William Howard Livens invented a small, non-electric dishwasher suitable for domestic use in 1924. It was the first dishwasher that incorporated most of the
Dishwasher
in mind, although the bigger size limits its mobility and the weight usually results in tired legs for the user when used for a prolonged period of time. A recent addition to the above is an attachable laptop cooler and a comfort pad built into one. Laptop cooler A laptop/notebook cooler, cooler pad or chill mat is an accessory for laptop computers that helps reduce their operating temperature, which is normally used when the laptop is unable to sufficiently cool itself. Laptop coolers are intended to protect both the laptop from overheating and the user from suffering heat related discomfort.
Laptop cooler
well. As more users migrated to Win 98 by 2000, all players went USB. At the end of 1999, a company called Remote Solutions significantly broke that barrier by utilizing a laptop drive for song storage rather than low capacity flash memory. The Personal Jukebox (PJB-100) had 4.8GB, which held about 1200 songs, and invented what would be called the jukebox segment of digital music portables. This segment eventually became the dominant type of digital music player. Also at the end of 1999 the first in-dash MP3 player appeared. The Empeg Car and Rio Car (renamed after it was acquired
MP3 player
to a 15-year-old boy, Darren Beatty, for $60. The laptop was seized by the RCMP as evidence; the boy was subsequently given a new laptop for his honesty by an anonymous businessman. Witness Garnet Caton said the attacker seemed oblivious to others when the stabbing occurred, adding he was struck by how calm the man was. "There was no rage or anything. He was like a robot, stabbing the guy," he said. When he appeared in a Portage la Prairie courthouse on charges of second-degree murder, the only words Li reportedly uttered were pleas for someone to kill him. Li's
Killing of Tim McLean
July 1980 Yukio Yokozawa
Title: Laptop. Content: 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 widely released in 1982. It had an LCD screen, a rechargeable battery, and a calculator-size printer, in a 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
1973, Adam Osborne
1973, Adam Osborne
July 1980
1981
July 1980
1981