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The HP-97 programmable printing calculator was introduced 1976. Code-named "Kitty Hawk," the HP-97 had large keys and a bright LED (light-emitting diode) display. These features, combined with the ease of saving programs and data on magnetic cards (which themselves were interchangeable with the HP-67 models), made this a popular product for business and technical users.
Pascal calculator
replica by Roberto Guatelli
1978
37x13x10 (LWH)
art. no. 1979.0568
Canada Science and Technology Museum
This artifact, currently on display in our artifact spotlight area, has been linked to our recently acquired Babbage replica. The Italian scholar, Roberto Guatelli, made both of them. Guatelli was a well known maker of historic mathematical reproductions and did several replicas for IBM in the 1960s and 70s. He was especially well known for his Leonardo da Vinci recreations. See The Rotarian, December 1952.
THE ABOVE MODEL IS A REPRODUCTION OF A MECHANICAL CALCULATOR, FIRST DESIGNED BY BLAISE PASCAL IN THE 17TH C. IT WAS COMPLETED IN 1642. THE PRIMARY CONCEPTION WHICH THIS MACHINE INTRODUCED WAS THE MECHANIZATION OF THE CARRY. IT ADDS & SUBSTRACTS DIRECTLY, BUT MULTIPLICATION & DIVISION ARE ACCOMPLISHED BY REPEATED ADDITIONS & SUBTRACTIONS.
The 9100A was the world's first programmable scientific desktop calculator. Picture taken from a brochure.
The 4 logic boards and the display plug into this connector block. Metal contacts connect the edge fingers on the top of one PCB to those on the bottom of the PCB immediately above it. In many cases the fingers on the 2 sides of a PCB are connected on that PCB, so that a signal (such as the power or clock lines) can be bussed to all the boards
I spilled water on my calculator watch and now in addition to being the 0th of the month, none of the buttons work for me to fix it.
Oh well, I've had this thing for five years...
Powershot trivia: It actually is possible to take handheld macro shots with the flash. The camera will totally overexpose them on auto, but if you put it on manual, set a short exposure, and use "Fluorescent H" white balance, you can get passable results. Of course, I'd have done better had I bothered to set up my tripod, but in a pinch, this is good to know.
jones on calculator. Please feel free to use this image that I've created on your website or blog. If you do, I'd greatly appreciate a link back to my blog as the source: CreditDebitPro.com
Example: Photo by creditdebitpro
Thanks!
Mike Lawrence
This is a silicon disc, full of small parts ('chips'). Each of these chips (the small rectangles which make the disc look like a wafer) contains a calculator that is far more complex than the IBM 604.
Visit my blog at ideonexus.com for science news and speculation.
Vector calculator is vastly used concept in math as well as in science. Vector Calculator is a very useful online tools for students. Put the values and get the answers, not delay. Vector involves some operations like addition, subtraction etc.In vector calculator page you will get all vector related calculator like cross product calculator, vector addition calculator etc. Check out the list below to get all the calculators comes under vector Calculator.
A solar calculator plugin features smarter technical aspects and you would get familiar with the beneficial options. It’s time to install the plugin and you can use technology in your way. @ solarwizardplugin.com/
I can't help myself but to buy this cute floppy calculator~ I love Smiggle's~ everytime i go in there i want to take everything home with me.
I probably don't need another mousepad either~ but she is so sweet, she wanted to come home with me ^____^
I abused my calculator on my iBook by mashing numbers until I found that it said Infinity, it intrigued me
HP Business Consultant evolution ...
Hewlett Packard 18C-Business Consultant, 19B Business Consultant II, 19Bii Business Consultant II, 19Bii Business Consultant II (with back battery door and black keys).
OK, it's my vintage calculator collection. Sad, I know, but I do love kitsch electronics. I'm particularly fond of the Sinclair Enterprise in the centre of the shot.
Half of my daily workload. The rest of it is at school. And yes, that huge purse is necessary. Too bad it doesn't have more comfortable straps!
Oh, and I'm doing this... while I'm supposed to be studying for my test over "The Crucible" tomorrow. Ah, curse procrastination!
...whoops. ALMOST got caught by dad. ^_^
An early Texas Instruments calculator. It has a built in rechargeable battery and I have yet to test it
This calculator, a Texas Instruments SR-50, was my calculator in high school. It's certainly primitive by today's standards, but back in 1972 it was as state-of-the-art as existed. Well, except for the Hewlit-Packard HP62 (I think that was the model number). It had more stuff than mine did, but nobody could afford one. This one cost me $175 if I recall correctly. For a high school kid in 1972, that was a pile of money. I detasselled and bought this with my earnings.
I had already been branded a geek at school. I carried a briefcase, enjoyed the sciences, was good at math, and so on. But when I brought this, my brand was permanent. I didn't mind. Everyone secretly envied me my beautiful calculator. They were still using sliderules, looking up trig values on printed tables, and nixie-tube adding machines. I could calculate the sine of any angle out to 10 decimal places instantly. How could anyone not be jealous of that?
I wore my calculator on my belt. Yes, on my belt. It never left my side. You never know when you might need to find the square root of a number, calculate the length of the hypotenuse of a triangle, or some other such useful computation. Want to know the circumfrence of the circle driveway out in front? No problem. I'll just whip out my calculator, estimate the diameter of the driveway at around 50 feet, multiply by pi, the value of which is a single keypress away, and voila, there you have it... a bit more than 150 feet. Divide 5280 by 150 and I've instantly calculated how many times the track team has to go around the circle drive to run a mile. Now who wouldn't think that was useful?
I've kept my old friend all these years. It still works. It was in a box in my garage when I started cleaning this last weekend. It had been there since 2003, maybe... it's long been supersceded by far more powerful calculators, but I can still outcalculate those with my SR-50. And I can see the answer in the dark. It's glowing red LED display is still the sexiest display ever. Oh it ate batteries like there was no tomorrow, but the LCD things we have now are so boring, lifeless, flat. This display screamed "LOOK AT ME!" The new calculators scream "MATH IS BORING." Nothing could be further from the truth.
Math is the one language that is perfect. It's the language of the universe. If you can speak Math, you can understand anything. It's one of my regrets that I didn't pursue mathematics more enthusiastically. I had to make a choice. Computers won. But even in my computing, the math that I do know is invaluable. Some of my colleagues can't understand how I can solve problems as quickly and effectively as I do. I have a secret for them. It's the math. And it started in 1972, when a high school geek saved his money and bought a cadillac of a calculator, and fell in love with what it could do.
P.S. The number on the display is 69!
P.S.S. There are two kinds of people in the world: those who think the exclamation point is punctuation denoting excitement, and those who think it is the symbol for the factorial operation.
Balancing equations calculator An equation is said to be balanced, if the number of atoms of an element on both sides of a chemical reaction is equal. Online Balancing Equations Calculator is a tool which makes calculations easy and fun. It is used to balance the equation when an unbalanced equation is given. Try our Balancing Equations Calculator and get your problems solved instantly.
Probability is a part of mathematics is related with the random phenomenon. Probability Calculator is an online tool to find probability of a given situation or problem. It makes calculation easy and fun. If number of possible outcomes and number of event is given then it can easily find the probability.
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The hand-held twin calculator designed by D.K. & Wei offers a flexible way for one to work on mathematics - A solar-powered digital calculator is built on the front with a full touch interface for an efficient calculation. While, one can always enjoy the fun of calculating with beads from a back mini Chinese abacus!
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