Calculators

Press MATH and use the left or right arrow key to select PRB at the top. NCR will be the third option. This goes in between the two numbers, for example:

8 nCr 5

== WG== Sumt=1to infinity (Sg,t/r)= Sg,t/r ==

One can purchase a new Casio LK from: 'Amazon', 'eBay', 'Musiciansfriend', 'Argos', 'Casio', 'Guitar centre', 'Futurshop', 'Zzsounds', 'Walmart', to name a few. Prices vary, starting from $150.

Islam teaches us if we make enough for our sustenance and have a lil more extra bugs, we can give this to the poor and the needy in order that they for whom the daily bread butter/dal roti is tough, they can benefit from it

its simple to calculate zakat if you live in the US like me then as per RTT news

http://www.rttnews.com/Content/Commodities.aspx?Id=1613400&SM=1

price of gold in US as of may 2011 is 1530 USD for 1 ounce , now as per the sunni system if ur wealth is worth 85 grams of gold or more then zakid is compulsory on you so in order to know who qualifies for zakat and who deserves it is done via gold by most as :

converting 1 ounce into grams , 1 ounce = 30 grams so the math would be something like :

1530usd ------ 30 gms

x usd--------85 gms

so x = 1530 *85/30 = 4335 so if u make more then 382 dollars of saving an year in America , 2.5 percent of ur annual saving has to go to zakat , so say of the 40000 dollars u saved 1000 dollars at the end of the year then ur zakat is :

(ur fixed assets + annual earnings saved)*2.5/100 = 25 so u are obliged to give this money to make ur money pak of the evil spiritually inshallah this benefits the seeker if any

salam walaikum WA rehmatuallah he WA barakatuhu

Read more: What does Islam teach us about Zakat

1

That's not a question

You need to write your own term paper...

You can play games with any calculator. Calculator Puzzles, Tricks and Games by Norvin Pallas explains how children can do this.

no

A graphing calculator is a calculator with the capability of graphing an equation on a built-in coordinate grid on the screen. They usually have a simple LCD grid screen, and by typing in the equation (e.g., 5x+3), the screen refreshes to display a graph of the equation in a set window range.

Data is not matter.

Due date calculators can be found on the internet, at your local library. The calculators basically use the data from your last period and possible date of conception to arrive at your due date. These calculators are not an exact science and will only be able to suggest an approximate date.

Well I will give you the best answer you can get Well if

Press 2ND MEM (above +). Then choose the second option, Mem Mgmt/Del.... Choose the seventh option, Prgm.... Use the arrow keys to move the arrow on the side next to the program you want to delete. Then press DEL. The calculator will ask "Are You Sure?". Choose Yes.

multiply

Well, you'd start by actually coding the calculator part, but at the end, you would test the answer with something like:

if(ans % 2 == 0) {
printf("%d is even.", ans);
} else {
printf("%d is odd.", ans);
}

The percent sign in the if test is the modulo operator. It returns the remainder of dividing the former argument by the latter argument.

Enter the first number. Push the divide button. Enter the second number. Push the equals button.

In buying a calculator, you first need to know what you will be using this device for. There are simple computing calculators, scientific calculators, and graphing calculators. You can purchase a simple calculator at any office supplies store. You can buy or rent a scientific or graphing calculator through a private business or through your school if you are a student.

I'm not sure of the answer , but if you messes it up , it would cost a lot to repair .

The following is for a simple calculator; a scientific calculator is more complicated. I will assume the user will press keys to have a number appear on the display; to (for example) add this with another number, the user presses "+" followed by the second number, followed by "=".

You would use a visual interface, with the number display, the digits, the equal sign, and a few operations (plus, minus, multiply, divide, ...).

As soon as the user types the second number, the first number will disappear from the screen; therefore, you have to save it into some variable.

Every time a key is pressed, you have to decide whether you should add a digit to the number in the display (if it is a digit, or a period), or whether to do a calculation (if it is +, -, *, /). If it is an operation, do the operation (conditionally, depending on the selected operation), and replace the number displayed by the new value.

This is my sample code using JAVA:

import java.awt.*;

import java.awt.event.*;

import javax.swing.*;

import javax.swing.event.*;

import java.text.*;

import javax.swing.border.*;

class Calc extends JFrame implements ActionListener

{

private static final Font BIGGER_FONT = new Font("Tahoma", Font.BOLD, 13);

private JRadioButton decimalb,binaryb,octalb,hexab,enableb, disableb;

private JTextField _displayField, decimalTF, binaryTF, octalTF, hexaTF;

private JLabel decimalL,binaryL,octalL,hexaL;

private JButton exitb, convertb, clearb, backSpace, b9, b8, b7, b6, b5, b4, b3, b2, b1, b0, b11, b12, b13;

private JButton b14, b15, b16, b17, b18, b19, b20, b21, b22, b23, b24, b25;

private JPanel cbPanel, upperButtonPanel;

private ButtonGroup group, group2;

private boolean pluz = false;

private boolean subs = false;

private boolean multiply = false;

private boolean divide = false;

private boolean _startNumber = true;

private boolean dotCheck = false;

private String firstValue, Secondvalue;

private String _previousOp = "=";

private DecimalFormat df = new DecimalFormat("###,###,###.##");

private CalculatorLogic calLogic = new CalculatorLogic();

public static void main(String[] args) {

try {

UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());

} catch (Exception unused) {

;

}

Calc window = new Calc();

window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

window.setVisible(true);

}

public Calc()

{

super("Calculator With Number System Converter");

_displayField = new JTextField("", 15);

_displayField.setHorizontalAlignment(JTextField.RIGHT);

_displayField.setFont(BIGGER_FONT);

_displayField.setEditable(false);

_displayField.setBackground(Color.WHITE);

upperButtonPanel = new JPanel();

upperButtonPanel.setLayout(new FlowLayout());

upperButtonPanel.setBackground(Color.lightGray);

upperButtonPanel.setPreferredSize(new Dimension(170, 300));

decimalb = new JRadioButton("Decimal", false);

binaryb = new JRadioButton("Binary", false);

octalb = new JRadioButton("Octal", false);

hexab = new JRadioButton("Hexadecimal", false);

decimalb.setFont(BIGGER_FONT);

binaryb.setFont(BIGGER_FONT);

octalb.setFont(BIGGER_FONT);

hexab.setFont(BIGGER_FONT);

decimalb.addActionListener(this);

binaryb.addActionListener(this);

octalb.addActionListener(this);

hexab.addActionListener(this);

group = new ButtonGroup();

group.add(decimalb);

group.add(binaryb);

group.add(octalb);

group.add(hexab);

upperButtonPanel.add(decimalb);

upperButtonPanel.add(binaryb);

upperButtonPanel.add(octalb);

upperButtonPanel.add(hexab);

upperButtonPanel.setVisible(false);

JPanel panel = new JPanel(new GridLayout(10, 1));

panel.setPreferredSize(new Dimension(300, 300));

panel.setBorder(new BevelBorder(BevelBorder.LOWERED));

decimalTF = new JTextField(20);

binaryTF = new JTextField(20);

octalTF = new JTextField(20);

hexaTF = new JTextField(20);

decimalTF.setEditable(false);

binaryTF.setEditable(false);

octalTF.setEditable(false);

hexaTF.setEditable(false);

decimalTF.setBackground(Color.WHITE);

binaryTF.setBackground(Color.WHITE);

octalTF.setBackground(Color.WHITE);

hexaTF.setBackground(Color.WHITE);

decimalTF.setFont(BIGGER_FONT);

binaryTF.setFont(BIGGER_FONT);

octalTF.setFont(BIGGER_FONT);

hexaTF.setFont(BIGGER_FONT);

decimalTF.setVisible(false);

binaryTF.setVisible(false);

octalTF.setVisible(false);

hexaTF.setVisible(false);

decimalL = new JLabel("Decimal Value");

binaryL = new JLabel("Binary Value");

octalL = new JLabel("Octal Value");

hexaL = new JLabel("Hexadecimal Value");

decimalL.setFont(BIGGER_FONT);

binaryL.setFont(BIGGER_FONT);

octalL.setFont(BIGGER_FONT);

hexaL.setFont(BIGGER_FONT);

decimalL.setVisible(false);

binaryL.setVisible(false);

octalL.setVisible(false);

hexaL.setVisible(false);

panel.add(decimalL);

panel.add(decimalTF);

panel.add(binaryL);

panel.add(binaryTF);

panel.add(octalL);

panel.add(octalTF);

panel.add(hexaL);

panel.add(hexaTF);

upperButtonPanel.add(panel);

add(upperButtonPanel, BorderLayout.NORTH);

JPanel buttonPanel = new JPanel();

buttonPanel.setLayout(new GridLayout(5, 2, 5, 5));

buttonPanel.setBackground(Color.lightGray);

buttonPanel.setBorder(new BevelBorder(BevelBorder.LOWERED));

b9 = new JButton("9");

b8 = new JButton("8");

b7 = new JButton("7");

b6 = new JButton("6");

b5 = new JButton("5");

b4 = new JButton("4");

b3 = new JButton("3");

b2 = new JButton("2");

b1 = new JButton("1");

b0 = new JButton("0");

b11 = new JButton(".");

b12 = new JButton("/");

b13 = new JButton("*");

b14 = new JButton("-");

b15 = new JButton("+");

b16 = new JButton("A");

b17 = new JButton("B");

b18 = new JButton("C");

b19 = new JButton("D");

b20 = new JButton("E");

b21 = new JButton("F");

b22 = new JButton("=");

b23 = new JButton("sqrt");

b24 = new JButton("x\u00B2");

b25 = new JButton("x\u00B3");

b1.setFont(BIGGER_FONT);

b2.setFont(BIGGER_FONT);

b3.setFont(BIGGER_FONT);

b4.setFont(BIGGER_FONT);

b5.setFont(BIGGER_FONT);

b6.setFont(BIGGER_FONT);

b7.setFont(BIGGER_FONT);

b8.setFont(BIGGER_FONT);

b9.setFont(BIGGER_FONT);

b0.setFont(BIGGER_FONT);

b11.setFont(BIGGER_FONT);

b12.setFont(BIGGER_FONT);

b13.setFont(BIGGER_FONT);

b14.setFont(BIGGER_FONT);

b15.setFont(BIGGER_FONT);

b16.setFont(BIGGER_FONT);

b17.setFont(BIGGER_FONT);

b18.setFont(BIGGER_FONT);

b19.setFont(BIGGER_FONT);

b20.setFont(BIGGER_FONT);

b21.setFont(BIGGER_FONT);

b22.setFont(BIGGER_FONT);

b23.setFont(BIGGER_FONT);

b24.setFont(BIGGER_FONT);

b25.setFont(BIGGER_FONT);

b1.addActionListener(this);

b2.addActionListener(this);

b3.addActionListener(this);

b4.addActionListener(this);

b5.addActionListener(this);

b6.addActionListener(this);

b7.addActionListener(this);

b8.addActionListener(this);

b9.addActionListener(this);

b0.addActionListener(this);

b11.addActionListener(this);

b12.addActionListener(this);

b13.addActionListener(this);

b14.addActionListener(this);

b15.addActionListener(this);

b16.addActionListener(this);

b17.addActionListener(this);

b18.addActionListener(this);

b19.addActionListener(this);

b20.addActionListener(this);

b21.addActionListener(this);

b22.addActionListener(this);

b23.addActionListener(this);

b24.addActionListener(this);

b25.addActionListener(this);

b16.setEnabled(false);

b17.setEnabled(false);

b18.setEnabled(false);

b19.setEnabled(false);

b20.setEnabled(false);

b21.setEnabled(false);

buttonPanel.add(b7);

buttonPanel.add(b8);

buttonPanel.add(b9);

buttonPanel.add(b12);

buttonPanel.add(b13);

buttonPanel.add(b15);

buttonPanel.add(b4);

buttonPanel.add(b5);

buttonPanel.add(b6);

buttonPanel.add(b15);

buttonPanel.add(b14);

buttonPanel.add(b11);

buttonPanel.add(b1);

buttonPanel.add(b2);

buttonPanel.add(b3);

buttonPanel.add(b0);

buttonPanel.add(b22);

buttonPanel.add(b16);

buttonPanel.add(b17);

buttonPanel.add(b18);

buttonPanel.add(b11);

buttonPanel.add(b23);

buttonPanel.add(b19);

buttonPanel.add(b20);

buttonPanel.add(b21);

buttonPanel.add(b24);

buttonPanel.add(b25);

add(buttonPanel);

group2 = new ButtonGroup();

disableb = new JRadioButton("Disable Converter", true);

enableb = new JRadioButton("Enable Converter", false);

disableb.setFont(BIGGER_FONT);

enableb.setFont(BIGGER_FONT);

disableb.addActionListener(this);

enableb.addActionListener(this);

group2.add(disableb);

group2.add(enableb);

cbPanel = new JPanel(new GridLayout(3, 3));

cbPanel.setBorder(new BevelBorder(BevelBorder.RAISED));

cbPanel.add(disableb);

cbPanel.add(enableb);

convertb = new JButton("Convert");

clearb = new JButton("Clear");

exitb = new JButton("Exit");

backSpace = new JButton("BackSpace");

convertb.addActionListener(this);

clearb.addActionListener(this);

exitb.addActionListener(this);

backSpace.addActionListener(this);

convertb.setFont(BIGGER_FONT);

clearb.setFont(BIGGER_FONT);

exitb.setFont(BIGGER_FONT);

backSpace.setFont(BIGGER_FONT);

cbPanel.add(convertb);

cbPanel.add(clearb);

cbPanel.add(backSpace);

cbPanel.add(exitb);

convertb.setEnabled(false);

JPanel content2 = new JPanel();

content2.setLayout(new BorderLayout(5, 5));

content2.add(_displayField, BorderLayout.NORTH);

content2.add(buttonPanel , BorderLayout.CENTER);

content2.add(cbPanel, BorderLayout.SOUTH);

add(content2, BorderLayout.SOUTH);

this.setSize(340, 300);

this.setResizable(false);

this.setLocationRelativeTo(null);

}

public void actionPerformed(ActionEvent e)

{

try{

if(decimalb.isSelected())

{

b0.setEnabled(true);

b1.setEnabled(true);

b2.setEnabled(true);

b3.setEnabled(true);

b4.setEnabled(true);

b5.setEnabled(true);

b6.setEnabled(true);

b7.setEnabled(true);

b8.setEnabled(true);

b9.setEnabled(true);

b16.setEnabled(false);

b17.setEnabled(false);

b18.setEnabled(false);

b19.setEnabled(false);

b20.setEnabled(false);

b21.setEnabled(false);

}

else if(binaryb.isSelected())

{

b2.setEnabled(false);

b3.setEnabled(false);

b4.setEnabled(false);

b5.setEnabled(false);

b6.setEnabled(false);

b7.setEnabled(false);

b8.setEnabled(false);

b9.setEnabled(false);

b16.setEnabled(false);

b17.setEnabled(false);

b18.setEnabled(false);

b19.setEnabled(false);

b20.setEnabled(false);

b21.setEnabled(false);

}

else if(octalb.isSelected())

{

b0.setEnabled(true);

b1.setEnabled(true);

b2.setEnabled(true);

b3.setEnabled(true);

b4.setEnabled(true);

b5.setEnabled(true);

b6.setEnabled(true);

b7.setEnabled(true);

b16.setEnabled(false);

b17.setEnabled(false);

b18.setEnabled(false);

b19.setEnabled(false);

b20.setEnabled(false);

b21.setEnabled(false);

b8.setEnabled(false);

b9.setEnabled(false);

}

else if(hexab.isSelected())

{

b0.setEnabled(true);

b1.setEnabled(true);

b2.setEnabled(true);

b3.setEnabled(true);

b4.setEnabled(true);

b5.setEnabled(true);

b6.setEnabled(true);

b7.setEnabled(true);

b8.setEnabled(true);

b9.setEnabled(true);

b16.setEnabled(true);

b17.setEnabled(true);

b18.setEnabled(true);

b19.setEnabled(true);

b20.setEnabled(true);

b21.setEnabled(true);

}

if((e.getActionCommand().equals("Convert")) && decimalb.isSelected())

{

String input, bin="",oct="",hex="";

int rem,rem2,rem3,len;

char x;

input = _displayField.getText().trim();

try{

if(input.equals(""))

throw new Exception("Error");

else

len = input.length();

int num = Integer.parseInt(input);

while(num>0)

{

rem = num%2;

num/=2;

bin = rem + bin;

}

binaryTF.setText(bin);

decimalTF.setText(input);

int num2 = Integer.parseInt(input);

while(num2>0)

{

rem2 = num2%8;

oct = rem2 + oct;

num2/=8;

}

octalTF.setText(oct);

int num3 = Integer.parseInt(input);

while(num3>0)

{

rem3 = num3%16;

if(rem3<10)

hex = rem3 + hex;

else if(rem3 0)

{

JOptionPane.showMessageDialog(null,"Can't divide by zero", "Error Message", JOptionPane.ERROR_MESSAGE);

return 0;

}

else

return (a / b);

}

public double stringToDouble(String a)

{

return Double.parseDouble(a);

}

}

answer. you can use it if you have long answer and need to do something to it.

"E" indicates an error condition. This is generally caused by attempting a calculation out of the calculators possible range of answers, or by static electricity altering the memory contents. Try the AC (all clear) button, power on/off, removing and re-installing all batteries, using a straightened paper clip to depress the reset button (usually on the back of the calculator)