The Display


The RPD-95 display is a representation of a liquid-crystal display composed of three areas. Each of these areas displays different kinds of information as discussed on the next few pages



Types of Information Displayed

The three types of information displayed area illustrated below. Each type of information is explained in the pages that follow.

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The status indicators show you the current operating status of the calculator.

The alphanumeric display shows numeric values, audit trail symbols, and alphanumeric messages.

The function-key labels correspond to the function keys (F1 through F5). These display system menu selections for many of the calculator's functions. These are also used with programs available on software cartridges or programs you develop.

Status Indicators

The status indicators and their meanings are listed below.


  • mainLow - The calculator's batteries are low
  • secondIndicator - The [ 2nd ] key has been pressed
  • lowercaseIndicator - The alpha keyboard is locked into lower case.
  • errorCond - An error condition has occurred.
  • deIndicatorgIndicator - Angle units are set to degrees.
  • radIndicator - Angle units are set to radians.
  • gIndicatorradIndicator - Angle units are set to gradians.
  • alphaIndicator - The alpha mode has been selected.
  • hexIndicator - Hexadecimal number base has been selected.
  • octIndicator - Octal number base has been selected.
  • sysIndicator - The system registers are unprotected.
  • runIndicator - A program is running.
  • insertIndicator - Insert mode is in effect (in the alpha or learn mode).
  • ioIndicator - Information is being exchanged via the I/O system with an "external" device (such as a simulated printer, or file system).
  • inverseIndicator - The inverse key has been pressed.
  • printerLow - The simulated printer's batteries are low.
  • arrowIndicator - More information is available to the left.

Alphanumeric Display

The alphanumeric display consists of 16 character positions. It displays the entries you make, an audit trail of operations performed, calculation results, and messages you receive from the calculator.

The entries you make first appear in the right side of the display. Then, when our press an operation key (such as [ + ], [ - ], [ x ] ), the number moves toward the center of the display.

An audit trail of your calculations is created when the symbol representing the operation you select appears at the right side of the display.

For example, as you enter the number 234, it appears at the right of the display. If you then press the [ + ] key, the numbers move toward the center of the display, and the audit trail symbols appears at the right as shown below.

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The results of numeric calculations also appear in the alphanumeric display. You can choose from a variety of formats for the display of such results.

Messages that are shown in this area of the display include error and status messages.

Temporary messages also appear in the left or right side of the display and usually show the entry you have just made. For example, if you press 45 [ SIN ], the message SIN appears in the right side of the display momentarily, until the calculation is complete.

Function-Key Labels

The function-key labels are grouped in five sets of three characters. Each label is located directly above the function key it represents.

When you press certain keys, the labels above the function keys show a system menu of available selections.

For example, if you press the [ CONV ] key, the CONVERSIONS menu is displayed.

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This menu indicates you can select types of conversions, such as metric { MET }, or angle { ANG }.

When labels are visible above the function keys, the functions indicated by those labels are available. You are not required to select a menu item merely because a menu is displayed. If you want to remove the menu labels, however, you can do so by pressing [ 2nd ] [ F:CLR ].

Generally, when a menu is displayed, you can:

  • Select one of the menu items.
  • Press a key (such as [ NUM ]) that displays another menu.
  • Perform other calculations, such as division or subtraction.


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