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This isn't real old, but I have had it for a while. Calculators likie this seem to be uncommon these days. Taken by Edgar.
Memory PCB. The large IC on the right is the custom PMOS address logic. The 3 ICs at the bottom are the system firmware ROMs, the 4 identical ICs at the top (with yellow dots) are the RAM (1K*1 bit each). The remaining ICs are standard TTL parts to interface the RAM to the PMOS logic
Needing a solar (photovoltaic) cell quickly for a project, I bought a cheap (£1) calculator with the solar cell clearly visible on the front.
When I took it apart, however, something was wrong: there were no wires leading fom the cell. Prising a black backing plate off revealed that the 'cell' was in fact a shiny transparent piece of plastic about an inch long with maroon/brown blocks printed on the back, with gaps left between them specifically to simulate the appearance of a real solar cell.
I wasn't quite sure whether to laugh or be annoyed. Why would a company bother to design and manufacture the fake solar cell? With calculators selling for £1 each it's surely unlikely that deceiving the customer in this way would make much difference to sales... so really, why did they bother?
Was it a conscious decision - "we can charge more for this if people think it's solar-powered"? Or was it just that other calculators have them so it was thought that this one ought to, even though it was fake?
This - www.alibaba.com/catalog/11270592/Desktop_Calculators_Stoc... - looks to be the same or a very similar model, with the text expressly describing the "dummy solar" as if it is a feature.
(And yeah, when I actually looked more closely at the box the calculator came in - after taking it apart - I did see the "Solar cell are dummy & only for decoration" text.)
Trigonometry calculator is a part of mathematics which is developed from geometrical measurement. It's also deals with triangles,circles etc. Basically you have noticed trigonometry deals with triangles. But its beyond that.You can see it's deals with circles and more. Trigonometry calculator is a tool which ca be very helpful for students in their various calculations of trigonometry.Trig Identities Calculator is an online tool to find sine, cosine, tangent, secant, cosecant and cotangent of a right triangle. It makes calculation easy and fun. If length of any two sides of right triangle is given, then it can easily find sine, cosine, tangent, secant, cosecant and cotangent of that right angled triangle. Here you can see a tool, 'Trigonometry Calculator'where you can calculate sine, cosine, tangent, secant, cosecant and cotangent of a right triangle.
Casio FX-603P scientific programmable calculator, introduced 1990, with a two line dot matrix display, keystroke programming, base N calculations, indirect addressing (and therefore Turing complete). The most powerful model of that series and rare to find.
This calculator has the basic mathmatical operations in small, lightweight shap and it has a modren design.
1-easy to use.
2-easy to carry it.
ID: 428201309
From: www.walyou.com
Graphing Calculator is a tool which makes calculations easy and fun. It is used to plot an equations and inequality. Try our Graphing Calculator and get your problems solved instantly.
Mortgage Calculator
shawnamacdonald.ca
Shawna MacDonald
506 Queen St. Saskataoon, Saskatchewan S7K 0M5
306.384.6353
Parts of the keyboard switches. At the top are the click spring, slider and contact for a slide switch. At the bottom, a plunger and key contact dome
Fraction to percent calculator This free online conversion calculator will reduce fractions into simplest form and then convert the simplified fraction into a decimal number, and then into a percentage.Plus, unlike other online conversion calculators, this calculator will show its work including the steps it took to reduce the fractions, as well as the long division you would use for converting fractions into percentages manually.
Graphing Calculator is a tool which makes calculations easy and fun. It is used to plot an equations and inequality. Try our Graphing Calculator and get your problems solved instantly.
This machine uses a standard 2.1mm coaxial power connector, but the plug from Maplin (top) will not fit through the hole in the case. The solution is to turn down the plug body, and produce the thinner version at the bottom
talk.cuetable.com/Diamond-System-Calculator.php
Diamond System Calculator simulates the basic 3 cushion ball path when the cue ball is hit with 2 tips running english, normal speed, level cue and follow through stroke.
Simply click and drag the cue ball or first ghost ball around to get instant readings on the third and fourth rail contact numbers. If there isn't a contact point on the second rail, the ball path will turn yellow and the calculation will stop. Click on the table labels to switch between pool table graphic and billiard table graphic.
Here, we will talk about one of the online educational program which is Graphing Calculator. Graphing Calculator uses the mathematical expression as its input and shows the symbolic or geographical shape as its output. If it produces a straight line as its output than the input equation is definitely of linear form. As we know, graphing is a paper representation of any shape which requires the Cartesian axes coordinates and slope or angle at which it is being drawn in respect of x axis or y axis.
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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.
Gestern habe ich 70 EUR für einen neuen (grafischen) Taschenrechner ausgegeben.
I spent 70 EUR for a new (graphic) calculator yesterday.
The logic assembly is (temporarily) fitted to the lower case and power up. It has jsut calculated SQRT(2).
The worn tiny numbers on this old mechanical calculator have seen heavy use through the decades. Testing the short mount Macro-Topcor 135mm f/4 macro lens.
View on black: decluttr
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.
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/