This is not a chain-logic calculator and not a scientific calculator. It has features of each of these.

    This page serves as an itroduction to the machine and to mathematical ideas listed below.

• the opposite of a number
• the reciprocal of a number
• powers of a number
• square roots and
• the contant feature

    A reference table and examples are also provided.

NOTES:
• No points have been marked on these pages for BREAKs. Decide for yourself when to break.
• On these pages the "Calculator Button" links you to the picture above so that you may see the placement of the calculator keys as you review their use.
• Keep both notes open and your calculator open.

Memory Status

-- If "M" is displayed, the memory hold a nonzero value.

-- If the display is empty, the number 0 is stored.

 

[MC], Store 0 in Memory

1st: Type the desired number onto to the calculator screen

2nd: Press [MS] for Store in Memory

 

[MR], Recall the Memory

-- Press [MR] to display on the calculator screen, but continue to store, the number stored in memory

 

[MS], Store the Entry in Memory

1st: Type the desired number onto to the calculator screen

2nd: Press [MS] for Store in Memory

 

[M+], Add the Entry to the Memory

1st: Type the desired number onto to the calculator screen

2nd: Press [M+] to add it to the number store in memory

[Backspace]

-- A as on a keyboard, when typing onto the screen this will remove the last digit or decimal

 

[CE], Clear Entry

-- Removes the number displayed on the calculator screen

 

[C], Clear Everything But Not the Memory

-- Clears all computation in progress via the calculator screen

 

[+], Add two numbers

-- enter [first addend] [+] [second addend] [=], to yeild the sum

 

[-], Subtract two numbers

-- enter [minuend] [-] [subtrahend] [=] , to yield the difference

 

[*], Multiply

-- enter [first factor] [*] [second factor] [=], to yield the product

 

[/], Divide

-- enter [dividend] [/] [divisor] [=], to yield the quotient

    Example #1: Twelve divided by three, 12 ÷ 3

      [12][/][3][=] 4

 

 

[=], Equals OR State Result

-- completes a binary computation, such as addition or division

-- engages the constant computation feature, as in an exponentiation

[sqrt], Square Root

-- enter [number], press [sqrt], to yeild the root

    Example #1: the square root of 25,

      [25][sqrt], 5

 

[%], Percent of

-- enter [base] [*] [rate] [%], to yield the percentage

    Example #1: 80 percent of 10, 80% of 10

      [10][*][80][%], 8

 

[1/x], Reciprocal

-- enter [number], press [1/x], to yeild the sum

    See examples.

 

[+/-], Opposite

-- enter [number] [+/-], to yeild opposite

    See examples.