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Seller Store backroadmemories
(2078) 99.5%,
Location: Lemon Grove, California
Ships to: US,
Item: 126680895576
All returns accepted:ReturnsNotAccepted
Epson:Epson
Date of Manufacture:1983
Type:Memory
Part No.:Y202020300
“Hx-20” Notebook Computer Expansion Unit:“Hx-20” Notebook Computer Expansion Unit
MPN:H20EU
Make:Hx-20 Notebook Computer
Country/Region of Manufacture:Japan
Vintage:Yes
California Prop 65 Warning:California Prop 65 Warning: Warnings about significant exposure to chemicals that cause cancer, birth defects, or other reproductive harm.
Box Dimensions:10.5″ (W) x 2.875″ (D) x 6.25″ (H)
NEW Vintage (1983) Hx-20 Notebook Computer “Expansion Unit”, by Epson Corporation (#H20EU) Packaging Condition: GOOD/GREAT – Comes in original packaging with operating manual (Unsealed, will be secure); with possible minor wear (stains, scuffs, and denting) to outer packaging (unit unaffected)UNTESTED; will accept return if defective (NOS); PDF versions of manual can be found onlineMade in 1983 (Japan)Part No. Y202020300Box Dimensions: 10.5″ (W) x 2.875″ (D) x 6.25″ (H)The Expansion Unit provides increased memory capacity for the Epson Hx-20 Notebook Computer. Installation of the Expansion Unit, with its 16k bytes of RAM (random access memory), doubles the amount of RAM on the HX-20. This means that you can have larger, more powerful programs and use more memory for variables and arrays. The Expansion Unit also has sockets for up to 32k bytes of ROM (read only memory). This allows large programs to be permanently stored in the HX-20 and instantly available for use. Because of the Expansion Unit’s compact design, it is easily mounted onto the HX-20, where it becomes an integral and permanent part of the computer. The power source built into the HX-20 provides power for the memory in the Expansion Unit. No external power source is required for operation, and programs and data stored in the Expansion Unit’s memory are protected when the HX-20 is turned off. The expansion port allows hardware to connect directly to the master processor’s memory bus, exposing the 16-bit address bus, 8-bit data bus and control signals. An external device can add ROMs, RAM or MMIO-devices to the master CPU’s address space. The address range 0x4000-0x5FFF has no internal mapping and is thus a good range for external hardware, but the internal ROMs (0x6000-0xFFFF) can be disabled as well using the ROM enable pin so the entire range 0x4000-0xFFFF can be used.The world’s first hand-held computer, the HX-20 (called the HC-20 in Japan), was created by bringing together Epson’s core technologies. Incorporating a multitude of functions in a body with an A4 footprint, the computer weighed a mere 1.6 kg. In addition to being lightweight and compact, the HX-20 came with a nickel-cadmium battery that allowed it to be used on the go and off the grid for up to 50 hours. Easily transported anywhere, the HX-20 can rightfully be called the forerunner of the modern mobile PC. The HX-20 drew widespread attention when it was exhibited at shows in Tokyo (the Data Show and the Microcomputer Show) and introduced outside Japan, where it was hailed as a new model for computers and was even called “the fourth revolution in personal computing.” The one model of the HX-20 became an astonishing bestseller. One-quarter of a million units were sold, as the product caught on not only in the personal computer market, which was the original target, but also in factories, where it was used to control production line and other operations. The HX-20 was the first model in a series of computers that would grow progressively more powerful as the years went by.Epson is a Japanese electronics company and one of the world’s largest manufacturers of computer printers, and information and imaging related equipment. The company’s extensive range of printers, scanners and 3LCD projectors are renowned for their high quality, functionality, compactness, and energy efficiency. Epson offers an extensive array of award-winning image capture and image output products for the consumer, photographic, business and graphic arts markets. The company is also a leading supplier of value-added point-of-sale (POS) printers and transaction terminals for the retail market. Epson enables people worldwide to make, share and capture creativity and bring it to life. Epson technologies open the door to limitless opportunities in visual communications, robotics, sensing, and business and commercial digital imaging. The roots of Seiko Epson Corporation go back to a company called Daiwa Kogyo, Ltd. which was founded in May 1942 by Hisao Yamazaki, a local clock shop owner and former employee of K. Hattori, in Suwa, Nagano. Daiwa Kogyo was supported by an investment from the Hattori family (founder of the Seiko Group) and began as a manufacturer of watch parts for Daini Seikosha (currently Seiko Instruments). In July 1982, Shinshu Seiki officially named itself the Epson Corporation and launched the world’s first handheld computer, the HX-20 (HC-20).Your shipment will arrive via USPS Priority Mail (1-4 business days), USPS Ground Advantage (2-5 business days), or UPS Ground Saver (1-6 business days), after the 2-3 day processing time (upon paid purchase)Shipment(s) sent out of Lemon Grove, California, USAWE DO COMBINE-SHIP – ASK US FIRST BEFORE MAKING FINAL PAYMENT!Will be packed very well – READ OUR FEEDBACK!No Returns (unless defective) ***AN INVOICE WILL BE SENT AFTER PURCHASE, WHICH MAY REFLECT A MORE ACCURATE POSTAGE RATE FOR THIS ITEM – DON’T PASS THIS UP YET! Please visit our Backroad Memories ebay store, or visit www.BackroadMemories.com, for more model collectibles added weekly! PLEASE SHARE OUR STORE WITH EVERYBODY YOU KNOW!
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