Basic

The first time you see handyCalc, you may not think this is a calculator, since there is almost nothing on your screen.

So if you don’t have a keyboard on your handset, click the menu and select Keypad, and you’ll see it.

Now you can input something. What about the simpliest 1+1=2 ?

Calculate it and you will get the following screen.

Notice that the .>(Marked 1) has turned blue. This button is not only be designed to be pressed. This is an “ans” button. Every time you calculate something, the answer is stored in a variable called “ans”. And when this button turnes blue, it means you are not inputing, but operating with the “ans”. For example, let’s press the + button, and it will flip to the next page with “ans+”, or when you press the √ button, the next page will show up with “√ans”.

I saw this ANS design on a CASIC calculator, and it is very useful if you realize how to work with it. For example, input ans+1 and press the equals button again and again, and you will see the ans is counting by 1.

But if you don’t want to work with the ans, just flip to the next page. Notice the screenshot marked two flip arrows on the input area and keypad area. They are different. But if you turn the keypad off, you got only input area, and you are always flip pages.

Flip pages is like navigat, you can go back to your previous input and result. Or you can flip to the next with a new page.

Now let’s try some complex expressions. Flip to a new page and press the keypad instructions below.

When you press √, the underline become smaller inside the sqrt box. That means you are currently input in that sqrt. and when you press the exponent, the underline become upper side. That means you are currently input in that exponent. When you wants to go outside, press right or enter.

It’s a big difference from other calculators, but it helps you input more complex expressions without the help of brackets. Maybe you just can’t get used to it. There is a pure text input method in developing. And when it’s releasesd, you can input in the most traditional way.

Now let’s move to another expression.

Try it yourself, and when you press a wrong button, you can always Undo it by press the SYM+Z or go to the Edit menu and press [Undo].

Tip: the sin() function is on the second keypad. Flip the keypad and you’ll see it. For those who has a keyboard on your handset, just input sin(.

You may have noticed there is a tip “Make result decimal”. If you want to get a decimal result, press it, and you will get the screen below.

Or, if you always want a decimal result, you should choose your Preferences.

Open the menu and choose preferences.

If you change your Integer/Decimal mode or Degree/Radian mode and return, you will get the changes on your screen.

The INT/DEC means your Integer/Decimal mode, the DEG/RAD means your Degree/Radian mode. always remember to check that mode instruction when you get the result you do not expected.

There are other preferences you can choose, such as the decimal precision, drafts box capacity.

Okay, now you known all the basic operations, and the next step is to practise. Here is some screenshots. Try to input them yourself.

Go to the advanced mathematica calculation tutorial (such as solve equations, define functions) ->

Go to the useful tricks (such as unit convert, statistics, etc) ->