Selected topics on technology

Group 13 presentation

Outline

1. Our topic and studying methods

2. Our application

3. Our first demo

1.1 Our topic

Our topic is “Android application developing”.

Android is the most popular open-

source software platform to create powerful application on mobile phones.

1.2 Studying methods

We contact and discuss with each other through our website: http://code.google.com/p/android-app-developing/

About every one week, we create a small topic (we write it at tab “wiki”). We read together, dicuss and help each other learn these new things.

Moreover, we share documents together. We upload these documents at tab “Download”.

1.2 Studying methods(cont)

If anyone of us has problems, we create a issue at tab “Issue” (it will be sent directly to the email of the other members).

In addition, we ussually hold a yahoo conference to discuss and remind each other.

Images captured from our website

2.1. Our application idea

We will create a “calculator” on mobile phone

As we know, mobile phones don’t have a full scientific calculator .

So, our group decided to create a “full scientific calculator” with the functions such as solving simultaneous linear equations…

With our “calculator”, the users can learn math with their mobile phone without carrying big normal calculator. It must be so convenient and interesting.

Top 3 “calculators” on the Android Market

(source: http://www.techpoweredmath.com/top-6-calculator-apps-for-android/ )#1–HandyCalc Calculator by mmin

• This app give you a lot of the basic functionality including all scientific calculator capabilities, graphing, and the ability to solve systems of equations.

•  Answers can be returned in fraction and radical form or converted to decimals.  There are also simple copy and paste capabilities, something that should be available in more apps.  The app even comes with a demo doc and a link to a video tutorial

#2–Scientific Calculator by Kreactive Technologies

• Buttons are attractive, with a nice top-lit effect, and a good size, making them easy to press.

• A flick scroll or double arrow button allows you to easily access scientific functions.  

• The calculator does feature some basic graphing capabilities. This calculator comes very close to 2-line functionality.

• You can enter an entire calculation before pressing enter. Then you can return to previous calculations by long pressing the input area.

• There are more powerful apps on this list, but UI is important in an Android app, and Scientific Calculator has a great one.

#3–Calculus Tools by Andy Mc

• A fantastic calculator app for calculus students is Calculus Tools. As its name implies, this app is focused almost exclusively on calculus, so it’s not for everyone.

• The app can find integrals as well derivatives up to the fourth degree, both algebraically as well as with with defined limits.

• It also has the ability to help you solve problems involving arc length, surface area, and Taylor series. Your results can also be graphed.

• The app also contains a pretty extensive list of formulas that calculus students have to memorize.

• The only real drawbacks with this app are that its scientific calculator mode is still in beta and fairly limited, and that all inputing must be done with your default keyboard.

2.2 Our “calculator” functions idea

We will also create a scientific calculator with more than normal functions

Beside normal calculus, we will create: Solving equation(s). Previous result history. Unit conversions for distance, area, volume,

mass, speed, time, pressure, energy, power, temperature and data sizes.

Powers, roots, logarithmic and exponential functions.

2.2 Our “calculator” functions idea

Beside normal calculus, we will create: Percentage calculations. Trigonometric functions in degrees, radians or

gradients. Factorials, permutations and combinations. Fixed-point, scientific and engineering notation

display modes, with adjustable decimal places. Hexadecimal, octal and binary modes with

logical operator functions. 10 memories with memory contents dialog for

store and recall.

3. Our first demo