
	Where results make sense

Topic: Pocket calculators

Related Topics

Calculator

History of computing hardware

Texas Instruments

Digital watch

Home computer

Clive Sinclair

Generating trigonometric tables

Microprocessor

Sine

Unit circle

Cellular telephone

Digital audio player

VAIO

Memory Stick

Microsoft

	Sinclair & the Pocket Calculator
		Sinclair in his quest for miniturisation, to produce a true pocket calculator, wanted to use button cells rather than normal batteries, but these would be drained in minutes by the chip and the LED display.
		Calculator chips have the possibility of having their operating instructions altered by using different masks in the manufacturing process.
		The pocket calculator had been a great success for Sinclair, but by the late 1970s it was starting to feel the effects of small, cheap, highly reliable calculators from Japan.
	www.vintagecalculators.com /html/sinclair___the_pocket_calculat.html (2404 words)

	How to Collect LED Pocket Calculators (Site not responding. Last check: )
		Pocket models consisted primarily of basic stylus-driven units which were capable of adding and subtracting only.
		For more advanced calculations, one would resort to a slide rule, some of which were made in small circular and cylindrical forms or in a short pocket-sized format.
		Pocket computers: These bear some physical resemblance to the pocket calculator, but are distinguished by their QWERTY keypads, inclusion of a high-level programming language such as BASIC, and ports for peripheral such as printers and cassette recorders.
	www.etedeschi.ndirect.co.uk /howto3.htm (1655 words)

	History of Electronic Calculators
		Before exiting from the calculator market, however, Sony forever left its mark on technological history by not only being "first" but also by development of SOBAX features used in virtually all later calculators, i.e., disappearing zeros (to left of displayed digits), floating decimal, the "rounding off" feature, percentage computations, and reciprocals.
		Sharp's plan was to reduce the electronic requirements of their desk-top calculator to 4 or 5 ICs: possibly leading to smaller and portable electronic calculators.
		Most are too large to actually be considered "pocket calculators," but they are far smaller than anything seen before.
	www.vintagecalculators.com /html/history_of_electronic_calculat.html (1769 words)

	Desk Calculators from Business Gifts Supplier.co.uk
		These desk calculators and pocket calculators are offered with free engraving of both text and logos, allowing you to customise them at no extra charge.
		These desk calculators are ideal as fine quality corporate merchandise or for company recognition or achievement awards.
		As with these desk calculators and pocket calculators (above), all our corporate accessories on Business Gifts Supplier are offered with free text and logo engraving.
	www.business-gifts-supplier.co.uk /cat_Desk_Calculators.html (337 words)

	HP-35
		The HP-35 was the first pocket calculator with transcendental functions and the first with RPN.
		The HP-35 and probably the entire HP pocket calculator product line was the sole result of a visionary CEO who chose to ignore the market studies and produce what he felt that engineers would want.
		It is the first pocket calculator to provide you with transcendental functions like logarithms and sines and cosines.
	www.hpmuseum.org /hp35.htm (1605 words)

	Planet Sinclair: Calculators: Executive
		Calculators prior to the Executive had been bulky, desk-bound affairs, often depending on mains power.
		A senior Soviet diplomat had been carrying an Executive in his breast pocket when it exploded, convincing the unfortunate man and his entourage that he was suffering a massive heart attack.
		After the fuss had died down, investigators found that he had forgotten to switch the calculator off: the current drain was so high on the batteries that they grew hotter and hotter, finally exploding.
	www.nvg.ntnu.no /sinclair/calculators/executive.htm (821 words)

	HNF - Heinz Nixdorf MuseumsForum (Site not responding. Last check: )
		When Sharp sold the first calculator with integrated circuits (ICs) in 1966, the road was clear for components, and thus calculators themselves, to undergo rapid miniaturization.
		The first battery-operated pocket calculators were launched at almost the same time in 1970 by the Japanese companies Sanyo, Sharp and Canon.
		Texas Instruments had already developed the first prototype of a pocket calculator in 1967 but this device - known as the Cal Tech - was only designed to demonstrate the power of the new chip.
	www.hnf.de /museum/tischrechner_en.html (379 words)

	DIY Calculator :: First Electronic Calculators
		The first experimental model of an electronic pocket calculator — known as the “Caltech” project — was created by Texas Instruments (TI) in 1966 [this machine is now preserved at the National Museum of American History (a part of the Smithsonian Institution) in Washington, DC, USA].
		Although the Pocketronic is classed as a “pocket calculator” by many, you would have required a sartorial dress sense with clothes sporting oversized pockets to accommodate its 4-inch width, 8.2-inch length, and 1.9-inch thickness.
		In fact, the honor of the first device that could truly be called "a pocket calculator" (without laughing) goes to the Busicom LE-120A "handy" from Japan, which appeared on the scene sometime around late 1970 and early 1971.
	www.diycalculator.com /popup-h-eleccalc.shtml (778 words)

	Calculators
		Calculator Collecting - Webring designed to allow navigation between similar sites dealing with the hobby of collecting, and history of electronic calculators.
		Datamath Calculator Museum - An overview of the calculators manufactured by Texas Instruments Inc. from the famous Datamath (1972) to the modern Graphics calculators, with history and articles.
		Soviet Calculators History - Article about the history of the development of Soviet calculators, the features and interesting characteristics of the most relevant models are described.
	members.tripod.com /fiona2uze-ivil/netseek/id99.html (507 words)

	TuxMobil: Linux Applications for Pocket Calculators
		lets you use your Casio calculator interface under Linux to send and receive files, and to control your computer remotely using your calculator.
		Libcafix, a lib to handle I/O to a Casio calculator, and gcafix, cafix in Gtk+, are also available in CVS.
		It implements the TI protocol for each type of calculator, independently of the link cable used to establish the link.
	www.tuxmobil.org /calculators_unix.html (594 words)

	Sharp LCD Calculators
		Because of their power requirements, the earliest pocket calculator displays - LED, vacuum fluorescent, Panaplex, and so on - greatly limited the size to which calculators could be shrunk and placed considerable limits on battery life.
		Theories abound as to why so many early LCD calculators used the yellow-screen display, the most common one being that it served as protection from "damaging" UV light until the technology was perfected to prevent that.
		Whether it was the first unit of this size is subject to debate: Casio produced the LC-79, a calculator of approximately 2 mm thickness (1.9 mm was stated in Casio advertising), as early as 1977, according to Casio's records.
	www.xnumber.com /xnumber/larry_sharp.htm (2273 words)

	Sharp Pocket Computers, Printers, Cables, Level Converters & Accessories
		This is a list of many of the Sharp Pocket Computers and their accessories that have been made since about 1977.
		The 15-pin SIO (serial input-output) connector is a standard one Sharp that has used for some time--most of their pocket computers use this connector for serial input/output.
		The 11-pin connector is a proprietary Sharp interface used to connect printers, cassette interfaces, and pocket floppy drives.
	www.promsoft.com /sharp_pocket_computers.htm (818 words)

	Inaugural address : Chapter 6.2: Pocket Calculators (Site not responding. Last check: )
		Like the god Thoth in Plato, the inventor of the pocket calculator will undoubtedly think that he has done humanity a great service.
		And I must admit that using a pocket calculator is more efficient than browsing through a table of logarithms, which used to be the fashion in my high-school days.
		Pocket calculators should in fact only be issued to people who have sufficient notion of the plausibility of what the machine is doing.
	home.hetnet.nl /~daanrijsenbrij/oratie/eng/ch-6_2.htm (184 words)

	Promotional Calculators, Desk Calculators, Pocket Calculators
		Looking for the best way to use your promotional dollars?
		Add it up and maximize your exposure with Custom Imprinted Promotional Calculators.
		These fun and functional items are just what you need to help get your logo noticed.
	www.motivators.com /Promotional-Calculators-Custom-49.html (50 words)

	MovingCompanies.net: Mortgage Calculators
		Our Mortgage Calculators will help you evaluate potential loans and select the one that’s best suited for you.
		Calculate the real out-of-pocket fees of a particular loan using a specific APR.
		If you select a 5/25 or 7/23 balloon mortgage, learn how much you will owe after the initial fixed period has expired.
	movingcompanies.moving.com /Mortgage_and_Finance/Calculators (161 words)

	Calculators (Site not responding. Last check: )
		For Generation-Calculator, the calculator was salvation in your pocket, a miniature deity that brought liberation from ‘doing sums long hand’, paper and pencil, or the dreaded slide rule.
		Given the rights-of-passage role that the calculator has played in so many people’s lives it’s not surprising that vintage devices are loved, cherished and collected with enthusiasm.
		To me, calculators signalled the birth of the consumer electronic revolution – for many people the calculator was their first exposure to the benefits of integrated circuit technology.
	members.tripod.com /alt-collector/Calculators.htm (1202 words)

	Tech Tidbit -- December 17, 2001
		The pocket calculator has taken the place of the slide rule as the calculating instrument of choice in many applications for engineers, scientists, and students.
		A pocket calculator for your PC, written in Java by Mikael Bonnier of Sweden.
		The TI-92, by Texas Instruments, first pocket calculator in the world with a dynamic geometry environment (Cabri II) and a formal computing system (Derive).
	www.alteich.com /tidbits/t121701.htm (610 words)

	POCKET CALCULATORS
		Today, pocket calculators cost just a few bucks and can be nearly as slim as a credit card.
		In the 1950s, calculations using only the simplest arithmetic were made on computers the size of a one-car garage that cost so much only governments could afford them.
		Now pocket calculators are everywhere and, for nearly everyone, what was once a luxury item is a necessity.
	www.courier-journal.com /foryourinfo/061002/061002.html (1985 words)

	Online museum for pocket calculators
		When Kilpatrick first heard that Hicks stores many of the calculators in drawers around his house, he was reminded of a large chest of drawers from his own childhood.
		But if he had to rescue his calculators from a burning building, he says, he would grab the most valuable: the 9100 and two low-end calculators, the HP- 10C and the HP-19C.
		The Museum of HP Calculators also offers classified ads, a collectors' corner, manuals and articles on, among other things, how to operate in Reverse Polish Notation, a method of calculation that doesn't require an "equals" key.
	www.sfgate.com /cgi-bin/article.cgi?file=/c/a/2002/08/26/BU52348.DTL&type=printable (715 words)

	Calculators Imprinted with your Logo from the Promotional Experts
		Promotional Calculators are just another great way for you to get your name out to potential customers and leave them a nice promotional item as part of the beginning of creating what you hope is a long term business relationship.
		Displaying your name with Calculators to your clients for the purposes of rekindling what was a business relationship or to maybe get your name back in front of your clients to let them know you are still here and ready to further future business.
		Using promotional Calculators to create an image or to further establish your image in your particular market can be a critical element in your future.
	www.saveonpromotionalproducts.com /calculators.htm (227 words)

	Home budget, Net Worth and More Personal Finance Calculators
		This calculator is designed to help you see the financial impact of having either one or two incomes for your household.
		This calculator is specifically designed to help students understand their expenses and income while attending a university, college or other full-time educational institution.
		KJE Computer Solutions, LLC's information and interactive calculators are made available to you as self-help tools for your independent use and are not intended to provide investment advice.
	www.dinkytown.net /personal.html (295 words)

	ARISTO-Electronic Pocket Calculators in the Online-Museum
		When in the 1970ies the slide rule era was ending, at the same time the spread of electronic pocket calculators increased rapidly.
		The calculators were quite slim at that time, because they fit into a jacket-pocket.
		Every ARISTO electronic calculator had a smoky-transparent plastic cover, protecting the unit and being placed on the calculator bottom during use.
	www.hh.schule.de /metalltechnik-didaktik/users/luetjens/taschenrechner/aristo-electronic-calculators.htm (492 words)

	Promotional Calculators Make Great Corporate Gifts.
		These durable desktop calculators leave plenty of room for your message or logo.
		Pocket calculators will put your logo in front of customers every time they open their briefcases or check their pockets
		At Garrett Specialties, we have a large selection of promotional calculators in all shapes and sizes that can be branded and personalized with your company logo or message.
	www.garrettspecialties.com /electronics-calculators-calculators-c-906_11.html (245 words)

	Delphi calculator section at Free Download Manager
		Loan calculator supports regional currency settings and works with wide range of repayment cycles from 1 month to 50 years.
		A real estate calculator that helps home buyers calculate the financial scenarios related to the purchase of a new home.
		JD Free Calculator is a complete replacment to the standard windows calculator.
	www.freedownloadmanager.org /downloads/delphi_calculator_info (525 words)

	Soviet Calculators Collection. By Sergei Frolov
		Information for experts and collectors about classification of Soviet calculators: mechanical, electromechanical, relays, pocket, desktop electronic, scientific (including programmable), programmable (including BASIC), with BASIC, with scientific notation, RPN, with algorithm of computing transcendent functions "Digit-by-digit" (CORDIC), with LCD display, with red LED display, with fluorescent display calculators.
		Here is in brief told how to work with the Soviet RPN programmable calculator B3-34, its analogues
		Most remarkable is that for generation of the special video messages, supernumbers and others features based on the undocumented features of the Soviet calculator "Elektronika B3-34".
	www.rk86.com /frolov/calcolle.htm (235 words)

	Wholesale Pocket Calculators - D.O.S.R. (Site not responding. Last check: )
		Getting wholesale pocket calculators at the lowest price possible makes sense for your business.
		Let us know where you found the best deals on wholesale pocket calculators so that we may add your review about wholesale pocket calculators to the D.O.S.R. site.
		Pocket size calculator, memory keys, power on-off, batteries included...
	www.discount-office-supplies-resources.org /catalog19/wholesale-pocket-calculators.html (459 words)

	Collector's Corner: Vintage Pocket Calculators
		Successors to the electrically-powered mechanical calculators of the first half of the Twentieth Century, the earliest portable electronic units were really too big to be carried in pockets.
		It was not until January 1971 that the first truly pocket-sized calculator, the Busicom LE-120A, appeared on the market, and the race was on to create smaller and smaller versions of ever more functional and less costly devices.
		Technological advancements in calculator displays accounted for much of the reduction in size as some of the earliest hand-helds actually printed on spools of paper or had green fluorescent tubes.
	www.auctionbytes.com /cab/abu/y206/m05/abu0167/s07 (822 words)

Try your search on: Qwika (all wikis)