Reverse sign Function [Alt-R] "Rev" {Reverse sign}
Square root Function [Alt-Q] {Square root}
Round,2 Function [Alt-N] {Round,2}
SaveMem Function [>] {SaveMem}
GetMem Function [<] {GetMem}
Subtotal Postfix [Alt-S] "Sub" {Subtotal}
Total Terminator [=] or [Enter] "=" {Total}
Clear Terminator [Alt-L] "Clr" {Clear}
In addition it has a numeric keypad that contains the numerals 0 - 9 and the
decimal point.
Postfix operations operate on a number or numbers that have preceded the operator.
Infix operations apply to the numbers immediately preceding and following the operator. Infix operations are nested, ie. they are resolved before their postfix cousins are resolved.
Functions apply only to the number currently in the input cell.
As a simple example, to add 3 - 6 = -3, enter 3 + 6 - [Enter].
For a more complex example, to calculate a bill with tax for five items: 1 coke at $1.00, three burgers at $2.00 each, and one out of a case of three apple crisps, when the case is worth $6.00, with tax altogether of 7%: enter the following keystrokes:
1 + 2 * 3 + 6 / 3 [Alt-S] * 7 % [Enter]
When [Enter], [=], or [Alt-S] are entered without a preceding + or - operator, the + operator is assumed.
So, the above keystroke sequence is equivalent to:
The calculator will use the previously calculated figure of the input cell if an operator is hit without entering a new number in the input cell. The input cell shows the running total of the calculation. This running total is automatically replaced by a number that you input in the input cell.
Thus 3 + + + [Enter] will give 9.00, while showing 3,6,9 after each plus, and 9 after the [Enter].
The paper tape is available for viewing and editing from the Menu, and this help text is available for viewing from the Menu.