GTCalc key commands and checklist

Quick Keys Guide 

To ENTER or DO Press Key(s) Manual Reference 

SPECIAL FEATURES 

Test Keys Mode On or Off Alt T 1.10 

Talk On or Off Ctrl T 1.4 

Quiet -To stop a value 

being spoken so that you 

can move on to the next 

operation. 

Ctrl Q 

Mouse Talk On or Off Ctrl M 1.8 

Tock On or Off Ctrl K 1.7 

Start or End a Session Ctrl S 2.23 

Open and Close the Onscreen 

Help Manual 

Speak the Value in the 

Display or in an Entry Box 

Ctrl H 1.14 

Tilde (~) 1.13, 5.3, 6.2, 10.9, 10.11, 

10.13 

Speak the Mode you are Alt Tilde (~) 1.12 

working in or the Screen 

being displayed 

Zoom In Z 1.5 

Zoom Out Ctrl Z 1.5 

Zoom Scroll Ctrl Arrow 1.5 

Zoom Fast Scroll Ctrl Shift Arrow 1.5 

Copy the value in the Ctrl C 2.24 

Display to the Clipboard 

Paste the value held in the 

Clipboard into a Document 

Ctrl V 2.24 

NAVIGATING BETWEEN SCREENS OR MODES 

Functions Mode Alt F or TAB and ENTER 9.2 

Select Constants Alt K or TAB and ENTER 5.2 

Select Conversion Type Alt V or TAB and ENTER 6.3 

Rational Mode Alt R or TAB and ENTER 7.2 

Finance Mode Alt N or TAB and ENTER 8.2 

Set Color Scheme Alt S or TAB and ENTER 12.2 

Return to the previous 

working mode or screen. 

To Exit Replay mode at any 

time. 

Esc 1.12 

2.22 

Forward cycle or Backward 

cycle through Mode or 

Screen Options 

To select a Mode or Screen 

Option Select it with Tab 

and press Enter 

Tab or Shift Tab 1.11 

TAB and press ENTER 1.11 

Exit Ctrl E or TAB and ENTER 1.3 & 1.11 

GTCalc Quick Keys Guide with manual references Page 1

CALCULATE MODE 

Changing Settings in Calculate Mode 

Set Decimal Places 

Ctrl D 2.14 

(Forward) 

Set Decimal Places (Back) Shift Ctrl D 2.14 

Set Number System Ctrl N 2.15 

Set Angle Mode Ctrl A 2.16 

Digits 0 to 9 

Entering Hexadecimal 

Digits 

A, B, C, D, E, F 

Entering Values 

M J K L U I O 7 8 9 or 

0 1 2 3 4 5 6 7 8 9 on 

number pad 

Shift key with J, K, L, U, I, 

O respectively. 

2.2 

2.15 

Pi Shift P 2.9 & 9.12 

Exponent N 2.13 

Change Sign Comma 2.10 

Decimal point Full stop (Period) 2.3 

Entering Fractions and 

Mixed Numbers 

Single Quote key next to 

the Enter key 

2.20 

Entering Basic Operators, Equals and Brackets 

Multiply Operator Zero key on top row or 2.4 

Number pad 

Minus Operator P or 2.4 

Number pad 

Plus Operator Semi-colon or 2.4 

Number pad 

Divide Operator Forward Slash or 2.4 

Number pad 

Open bracket Shift 9 2.11 

Close bracket Shift 0 (zero) 2.11 

Number of Brackets Open Ctrl B 2.11 

Equals Sign 

Enter key on the main 2.5 

keyboard or on the Number 

Pad 

Clearing the Calculator 

Clear The Calculator Ctrl Spacebar 2.8 

Clear the Display Spacebar 2.7 

Clear the Last Digit Entered Backspace 2.6 

Clear Statistical & Linear 

regression DATA 

Key C & then key Y (for 

Yes) key N (for No) 

3.6 & 4.6 

Accessing Groups and Entering Functions 

Access Group 1 to Group 6 F1 to F6 2.17 

Enter the Nine Functions W E R S D F X C V 2.17 

Assigned to each Group 


Memory Buttons 

Memory- overwrites current Left square bracket 2.12 

contents of memory register 

Memory plus 

Equals key on top row of 2.12 

keyboard 

Memory minus 

Dash key on top row of 2.12 


Memory recall Right square bracket 2.12 

Toggle Constant (C1-C4) 

and Function (F1-F4) 

buttons 

Constants and Functions 

Ctrl F 

Assign Constants C1 to C4 Ctrl 1 to Ctrl 4 2.21 

Display Constants C1 to C4 

when Constant Buttons 

Active 

1 to 4 on top row of 


2.21 

Display Functions F1 to F4 

when Function Buttons 

Active 

Switch replay mode on 

Switch replay mode off 

1 to 4 on top row of 


Replay Mode 

Up or Down Arrow (Down 

arrow replays from start to 

end of calculation. Up 

arrow replays from end to 

start) 

Press down arrow when at 

end of calculation, Up 

arrow when at start of 

calculation, or Esc at any 

time. 

2.21 & 9.23 

9.23 

2.22 

2.22 


Functions Mode 

To return to Calculate mode Alt C 9.28 

To open the Set Axes Alt A 9.26 

window 

To open the Graph window Alt G 9.27 

To set the Angle Mode to Ctrl A 9.22 

Degrees or Radians 

To clear the currently SPACEBAR 9.24 

displayed function 

To clear all entered 

Ctrl SPACEBAR 9.25 

functions 

To enter variable X,X 2 , X 3 Use key 6, Y, H 9.5 

To enter euler's constant (e) Use key N 9.13 

To raise to the power Shift 6 9.6 

To Enter the Function Enter 9.16 

To Scroll through the list of Up and Down Arrow keys 9.17 

functions entered 

To speak the value of the Tilde (~) key 1.13 

displayed function. 

To move the function cursor Home, End, Left and Right 9.19 

to edit the displayed 

function 

Arrow keys 

To delete a function item Delete or Backspace key 9.21 

To select an Entry Box to 

set or change the values for 

the X and Y axes of the grid 

for graphing functions 

Functions Mode (Set Axes Window) section 11 

Use the Up/Down arrow 11.5 

keys 

To enter the digits 0 to 9 Use keys M, JKL, UIO, 789 

on the right side of the 

keyboard or the Number 

Pad 

To enter a decimal point 

To enter a minus sign 

Use the Full Stop (period 

key) from the keyboard or 

Number Pad 

Use key P on the keyboard 

or the minus key on the 

Number pad 

11.6 

11.7 

11.8 

To enter a change of sign Use the Comma key 11.9 

To clear the last digit Press the Backspace key 11.10 

entered 

To clear the currently Press the Spacebar 11.11 

selected entry box 

To Set the Default settings Use key D or key T 11.3 & 11.4 

or the Trig settings 

To close the Set Axes 

Window 

11.12 

Press Escape or Tab to the 

Close option and press 

Enter 


Functions Mode (Graph Window) section 10 

To access the Graph Use the Up/Down arrow key 10.2 

window options 

to select each option in turn 

To select Full Screen or 

Normal Screen 

Key F or Use the Up/Down 

arrow key to select the 

Screen option and press 

Enter 

10.3 

To print the currently 

displayed graph 

Turn Talk ON or OFF 

Ctrl P or Use the Up/Down 

arrow key to select Print 

Graph and press Enter 

Ctrl T or Use the Up/Down 

arrow key to select the Talk 

option and press Enter 

To turn the Grid ON or OFF Ctrl G or Use the Up/Down 

arrow key to select the Grid 


To play the currently 

displayed graph 

To cycle through the graphs 

To Trace the graph 

To speak the coordinates of 

a selected trace point 

To sound trace to the right 

or to the left. 


the current Sound Trace 

point 

Key P or Use the Up/Down 

arrow key to select the Play 


Key C (select cycle option 

& forward cycle)and Shift C 

(backward cycle)or use the 

Up/Down arrow key to 

select the Cycle option and 

press the Right/Left arrow 

keys to cycle Forward or 

Backwards through the 

graphs 

Key T (select trace & 

forward trace)and Shift T 

(backward trace) or Use the 


select the Trace option and 

press the Right/Left arrow 

keys to cycle Forward or 

Backwards 

10.4 

10.5 

10.6 

10.7 

10.8 

10.9 

Tilde (~) key 10.9 

Key S (select sound trace or 10.10 

forward trace)or Shift 

S(backward trace) or Use 

the Up/Down arrow key to 

select the Sound Trace 

option and press the Right 

or Left arrow keys to the 

right or to the left 



To speak the features of the 

graph 


a selected Feature 

To set a displayed function 

as the Reference function 

To speak the points where 

the main and reference 

graph intersect 


the selected Intersection 

Point 

Change speed for sound 

trace/play 

To open the Constants 

Window 

To scroll by item or by page 

of the Constants List 

To go to the Start or End of 

the Constants List 

To use the selected 

Constant 

To speak the Constant value 

displayed in the Calculator 

window 

Key F (select features or 10.11 

forward cycle thru’ 

features)or Shift F 

(backward cycle)or Use the 


select the Feature option 

and press the Right or Left 

arrow keys to move to the 

Next or Previous Feature 


Use key R to set or remove 10.12 

a Reference function or Use 


select the Set Reference 

Graph option and press 

Enter 

Use key I (select Intersect 10.13 

or forward cycle thru’ 

intersections) and Shift I 

(backward cycle thru’ 

intersections) to display the 

Next or Previous 

Intersection point or Use 


select the Intersects option 

and use the Right arrow key 

to move to the Next 

intersection point or the 

Left arrow key to move to 

the previous 


Alt Up or Down arrows. 10.7 

Constants Mode section 5 

Press Alt K or Tab to the 5.2 

Constants option and press 

Enter 

Up and Down Arrow keys 5.2 

or Page Up and Page Down 


Home or End keys 5.2 

Press Enter 5.2 

Press Tilde (~) key 5.2 


To open the Conversions 

Mode Window 

To select the type of 

Conversion, the units to 

convert from and/or to. 

To open the Rational Mode 

Window 

Conversions Mode section 6 

Press Alt V or Tab to the 

Conversions option and 

press Enter 

Use the Up/Down arrow 

keys and press Enter 

Rational Mode section 7 

Press Alt R or Tab to the 

Rational option and press 

Enter 

To enter digits Enter as in Calculate mode. 7.1 

To enter a fraction or mixed Use the quote key between 7.5 

number 

whole number, numerator & 

To close the Rational Mode 

Window and return to the 

Calculator window 

To open the Finance Mode 

Window 

To be guided through a 

calculation 

To set the type of 

calculation 

To set the time of payment 

To enter the required values 

denominator 

Press Escape or Tab to the 

Close option and press 

Enter or press Alt C 

Finance Mode section 8 

6.3 

6.3 

7.2 

7.8 

Press Alt N or Tab to the 8.2 

Finance option and press 

Enter 

Use the Up/Down arrow 8.3 


Use the Right/Left arrow 8.3 

keys to scroll through the 

options to the one you 

require and then press the 

down arrow key to 

continue. 

Use the Right/Left arrow 8.3 

keys to scroll through the 

options to the one you 

require and then press the 

down arrow key to 

continue. 

Use the Number pad or the 8.6 8.7 8.9 

keyboard as in Calculate 

mode 


To speak the value in an 

entry box. 

To clear the last character Use the Backspace key 8.10 

entered 

To clear an entry box Press the Spacebar 8.11 

To clear all entry boxes Press Ctrl Spacebar 8.12 

To Close Finance mode and Press Escape or Tab to the 8.13 

return to the Calculate Close option and press 

Window 

Enter or press Alt C 


To open the Set Color 

Scheme Window 

To select a Set Color 

Scheme option 

To select one of the 

following: 

Calculator Screens 

Graphics Screen 

High Contrast White 

High Contrast Black 

Default Colors 

Save 

Cancel 

Set Color Scheme 

Press Alt S or Tab to the 

Set Color Scheme option 


Tab to the required option 


Press key: 

C 

G 

W 

B 

D 

S 

Esc 

12.2 

12.3 

12.6 

12.6 

12.4 

12.5 

12.8 

12.7 

12.9 

To set the Calculator Screen Options 

To select Desktop, Window, 

or Text 

Use Ctrl and the Up/Down 

Arrow keys to select the 

option required 

12.6 

To select the color options: 

red, green, or blue 

To select Canvas, Axes, 

Grid, Graph, or Reference 

Graph 

To select the color options: 

red, green, or blue 

Use the Up/Down Arrow 

keys to choose the color 

required and then use the 

Left/Right arrow keys to set 

the color 

12.6 

To set the Graphics Screen Options 

Use Ctrl and the Up/Down 12.6 

Arrow keys to select the 

option required 

Use the Up/Down Arrow 

keys to choose the color 

required and then use the 

Left/Right arrow keys to set 

the color 

12.6

GTCalc key commands and checklist

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