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- Calc is a Reverse-Polish-Notation (RPN) calculator. You
- must enter the operands first, then the operation. For
- example, to add 3 and 4, press [3] [Enter] [4] [+]. If
- the operation is unary, like sine, it operates on the bottom
- element of the display. To take the sine of .54, do:
-
- [.] [5] [4] [Sin].
-
- The last 6 entries of the stack are visible, and you can
- scroll to see the rest. All operations are performed on
- the element(s) at the bottom of the stack. The bottom
- element is called 'x' and the next element up is called 'y'.
-
- The [+/-] key changes the sign of x. To find the cosine of
- -.22, do:
-
- [.] [2] [2] [+/-] [Cos].
-
- The [Inv] key changes the operation of some of the other keys
- so they perform the inverse operation. It is only active for
- one keystroke. Press [Inv] again to cancel the operation.
-
- [Sto] and [Rcl] stores and recalls a single value.
-
- [Dup2] duplicates the bottom 2 items on the stack.
-
- [Roll] rolls all the stack elements down one, and puts the
- bottom element on the top.
-
- [Exch] swaps the bottom two elements.
-
- [Int] gives the integer part.
-
- [Inv] [Frac] gives the fractional part.
-
- [Clr] clears the bottom element to zero. Use this when you
- get some kind of error.
-
- [B10] and [B16] put you in base 10 or base 16 mode. Numbers
- with fractional parts are always displayed in base 10. In
- base 16 mode, the keys [a] through [f] are used for numeric
- entry. They do nothing, otherwise.
-
- [And], [Or] and [Not] are logical operations on 32 bit
- integers. If there's a fractional part, they don't do
- anything.
-
- To remember a sequence of keystrokes, press [Prog], then the
- sequence of keystrokes, and then [Prog] again. For example,
- if you want to calculate x^2 + y^2 repeatedly, where x and y
- are the two bottom entries of the stack, do this:
-
- [Prog] [Inv] [x^2] [Exch] [Inv] [x^2] [+] [Prog].
-
- Then, to calculate 5^2+7^2, do this:
-
- [5] [Enter] [7] [Run].
-
- The following keys from the computer keyboard are understood
- by calc:
-
- [0], [1], [2], [3], [4], [5], [6], [7], [8], [9], [.],
- [Enter], [+], [-], [*], [/], [a], [b], [c], [d], [e], [f].
-