Mobile Calc Home Page

Custom keyboard layout

Create up to three custom keyboards and save them for instant recall and use. You may also restore the keyboard to one of two Default keyboard layouts.

To create and save a keyboard, or recall a default keyboard, follow these steps:

1. PaperCalc: Touch the Keyboard Layout Icon in the upper left corner of the keyboard.

    PaperCalc 3, PaperCalc 3 Office and Calculatrix: Touch the 'info' icon, then select Edit Keyboard Layout.

2. Recall a default keyboard by pressing:

     "D1" or D2" (PaperCalc)

     "Trig 1" or "Trig 2" (PaperCalc 3 & Calculatrix)

     "Office" or "Office +" (PaperCalc 3 Office)

3. Create a custom keyboard by touching keys and moving them. The key you move with your finger will swap with the key that it is replacing. 

4. Choose from any of 3 key sizes by tapping a key.

5. Move keys from the main keyboard to the trigonometric keyboard (or vice-versa), by blasting the key through the left wall (going to trigonometric) or through the right wall (going to the main keyboard).

6. Save a keyboard by pressing any one of the "Cust 1", "2" or "3" keys. You may also rename these keys to give them your own titles by pressing the key again after the save is complete and choosing "Edit Name".

7. The active keyboard ("D1", "D2", "Cust 1, 2, or 3", "Trig 1 or 2") will show as a red button.

8. Recall any saved keyboard by pressing the appropriate key and choosing ""Recall".

Resizable keyboard & lock in place

Resize the keyboard by touching the LCD display and sliding it up or down. The keyboard and paper tape will adjust accordingly. The green flash at about the 2/3's position represents the default position.

Lock the keyboard in place:

All Products: Hold a finger still on the LCD display for about 2 seconds. A lock or unlock symbol will appear in the lower left corner of the LCD display.

Grabbing numbers for use in your current calculation

The paper tape is a memory storage system that holds all your prior calculations. All of our calculators use PTNS (Paper Tape Numeric Storage) to 'recall' numbers from the paper tape for use in your current calculation.

PaperCalc Series: Any number can be grabbed from any line of the paper tape for use in your current calculations. Just touch a line and wait briefly for the pop-up menu. The menu will enumerate the available numbers from the line. Grab one by touching the number, the dialog pop-up will close and your number will be available as part of your chain calculation.

Calculatrix: Calculatrix's advantage is instant number recall from the paper tape without any intermediate menu.

Both PaperCalc and Calculatrix have the same effect (to recall a number). Calculatrix is optimized for speed, while the PaperCalc series offer slower recall, but other options like adding comments to a line or pasting to the Apple clipboard.

Adding or editing comments on any line (PaperCalc series only)

A comment can be added to any line or edited. Just touch a line and select "Add Comment", then type and press "Done" on the keyboard to finish.

If a comment already exists, the alert box will allow you to edit the line instead.

Accessing the scientific keyboard (PaperCalc 3, PaperCalc and Calculatrix only)

The scientific keyboard is positioned to the left of the main calculator. Just scroll with a finger using a right hand motion in the keyboard area to bring the trigonometric keyboard front and center.

Changing fast power-on, sound, and fixed-point-precision on the options page

Three options can be set by scrolling to the right side view from the main calculator.

1. Sound can be turned on or off (on is default)

   

2. The fixed-point-precision can be set from 2-8 places. When fixed-point or eng^3 display formats are chosen, the number selected will be used to limit the length of the number displayed.
3. Power-on can be made faster (off is default). If this option is turned ON, the animated keyboard effect will be lost at power-on.
   
   

Email, timestamp and clearing the paper tape.

Pressing the envelope-gear button will cause an alert dialog to come up to email, clear or timestamp the paper tape.

Also, all calculators have an optonal double-tap-to-clear option. Make sure the 'Double-Tap-To-Clear option button is ON on the right0side scroll page. Thena double-tap of the LCD display on the calulator page will clear the paper tape.

Using the 10 memory storage system

The 10 memories each show as green if empty, or red if occupied.

To perform a memory operation:

1. start by pressing the "mem" button on the main keyboard.
2. press one of the functions highlighted in yellow (store, recall, add, subtract, or clear)
3. press a number (0-9) and the desired operation from step 2 will be performed on the memory location.

Performing constant calculation operations

Constant operations are for repetitive calculations. For example, you want to multiply the number 3 times a variety of different numbers. To perform constant operations:

1. Enter your 1st calculation. For example: '4 x 5 ='. The paper tape will show '4 x 5 = 20'.
2. Now simply enter a number, then the '=' sign. For example '6 ='. The paper tape will show '6 x 5 = 30'.

The 2nd number entry is always the constant. In the example above, '5' is the constant. If you entered '9 / 3 =', then '3' is the constant, and pressing a number and '=' will cause each number to be divided by 3.

Rotating between the three display options

The three display options are Float (scientific), eng^3 (exponent is multiple of 3), and fix.x (fixed btween 2 & 8 places). Each is shown in a three-way rotation by pressing the display-format key. The key shows the current display mode that PaperCalc is in.

Degree-radian mode and degree-radian conversion (PaperCalc only)

The 'deg' (or 'rad') button is the 2nd from upper right key on the Trigonometric keyboard. The key determines whether sin, cos, and tan operate in degrees or radians. Press the button to change from one system to the other.

On the trigonometric keyboard, the d->r (or r->d) key just below 'deg' (or 'rad') key will then perform degree-to-radian (or radian-to-degree) conversion.

Clearing the immediate operand or the entire calculator

Pressing the 'CE' key once clears the immediate operand in preparation for re-entry. Pressing the key a 2nd time consecutively, causes an 'ALL CLEAR' and a printout on the paper tape.

Editing numbers

The 'delete' key (a left pointing box with an x inside) can be used to delete an incorrect number in a number entry.

Using the % (percent) key

There are two ways to use the % key:

• Usage 1 (obtain the % of number):

example:  Press '200 % 5 ='...yields an answer of '10'. In other words Paper Calc took 5% of 200.

 
• Usage 2 (the % of a number is used in the operation on the number):

example 1:  Press: '200 - 5 % ='...yields an answer of '190'. In other words Paper Calc subtracted 5% of 200 from 200.

example 2:   Press '200 + 5 % ='...yields an answer of '210'. In other words Paper Calc added 5% of 200 to 200.

Pi and e to 3000 places

Press the pi or e key repeatedly to get decimal place precision to 3000 places. For example:

1st key push of pi shows: '3.14159265358979'

2nd key push of pi shows: 'Pi(16-19): 3238....'

3rd key push of pi shows:  'Pi(20-29): 4626433832..'

Each successive key push gives a further 10 places of precision.

How to use a chain calculator like PaperCalc

Chain calculators are the most widely available and easiest to use of the many types of calculators that are out there. You simply enter numbers and operations such as +, -, x and / in a chain. For example:

If you press: "4 x 5 - 3 + 20 =", the answer will be 37. PaperCalc's display wil show:

4 x 5 = 20

20 - 3 = 17

17 + 20 = 37

PaperCalc will generate the paper tape display automatically for you as you enter your chain calculations.

Other operands available for chain calculations include log(y)/log(x), y^x, and y-root-x.

The single-operator operands can be interleaved with the 2-operator operands. For example, the key sequence:

"4 x 9 sqrt =' will product an answer of 12. The paper tape will look as follows:

4 x 9

sqrt(9) = 3

4 x 3 = 12

For those accustomed to chain calculators (which is about everyone), the entry is entirely natural, and the paper tape is created automatically for a perfect record. The list of single-operator operands is:

sqrt, 1/x, log, 10^x, ln, e^x, x^2, x!, sin, cos, tan, arcsin, arccos, arctan, sinh, cosh, tanh, arcsinh, arccosh, arctanh, d=>r, r->d

Topic covered

Custom keyboard layout

Resizable keyboard & lock in place

Grabbing numbers for use in your current calculation

Adding or editing comments on any line

Accessing the scientific keyboard (PaperCalc, PaperCalc 3, Calculatrix only)

Changing fast power-on, sound, and fixed-point-precision on the options page

Email, timestamp and clearing the papertape

Using the 10 memory storage system

Performing constant calculation operations

Rotating between the three display options

Degree-radian mode and degree-radian conversion

Clearing the immediate operand or the entire calculator

Editing numbers

Using the % (percent) key

Pi and e to 1000 places

How to use a chain calculator like PaperCalc