LOGICS Controls — Mouse, Keyboard and Touch Shortcuts

Controls

Controls and shortcuts

Every click, key and gesture each tool understands, in one place. Press ? in any tool, or open Help → Controls and shortcuts, to come straight here.

Keys are shown for Windows and Linux. On a Mac, Ctrl is ⌘ Command, and this page shows Mac keys by itself.

In every tool

To do this	Do this
Open this page	`?`, or Help → Controls and shortcuts
Save	`Ctrl+S`, or Save at the top right. Something new is asked for a name first. Beside the button: Not saved yet, Saving… or Saved with the time
Zoom in and out	Scroll the wheel over the canvas, or the − / + buttons; pinch on a trackpad
Move the view	Drag the empty canvas
See everything	Fit
Undo · redo	`Ctrl+Z` · `Ctrl+Shift+Z` (or `Ctrl+Y`) — Circuit and Breadboard Simulator
Close a menu, cancel, deselect	`Esc`
Hide or show the side panel	The ‹ handle at its edge, or View → Hide the panel

Circuit Simulator

The mouse

Click or drag	What it does
Click a part	Selects it; the inspector shows its settings
Drag a part	Moves it (and the rest of the selection with it), in whole grid steps
`Shift`-click a part	Adds it to the selection, or takes it out
`Shift`-drag the empty canvas	Draws a box; everything in it is selected. Drag: select makes a plain drag do this
Drag from a pin to another pin	A wire the router lays for you
Click a pin, then click…	Draws a wire yourself: each click places a square corner; click a pin to finish, or click another wire to join it (a dot marks the join)
Drag a wire's run	Bends it; Auto-route hands it back to the router
Click a switch on the canvas	Flips it
`Ctrl`-click a pin, a wire or a part	Traces it back: lights every wire its signal travels to get there, back to the switches. The same click again clears it
`Shift`-click a pin	Rings every pin on its net: the output that drives it and every input it reaches
`Shift`-click a net label	Boxes every label with the same name and lights the wires on that net; zooms out if some are off screen
Drag a part from Components	Puts it on the canvas where you let go

The keyboard

Key	What it does
`R` · `Shift+R`	Turns the selection a quarter turn, one way or the other
`Delete` or `Backspace`	Removes the selection
`Ctrl+C` · `Ctrl+X` · `Ctrl+V`	Copy · cut · paste (paste again for another copy)
`Ctrl+D`	Duplicates the selection beside itself
`Ctrl+A`	Selects everything
`Esc`	Deselects, clears a highlight, leaves full screen
`Enter` in the expression box	Build circuit

While drawing a wire

Key or click	What it does
Click the canvas	Fixes the corner and carries on
Click a pin	Ends the wire there
Click a wire	Joins that wire's signal (the wire must have started on an input)
`/`	Turns the corner the other way
`Backspace`	Takes the last corner back
`Esc` or `Enter`	Cancels the wire

Reading the board

A wire carrying 1 is green; one carrying X (nothing drives it, two things do, or it loops) is red.
A dot marks where one signal splits. Wires that cross without a dot are not connected, and two different signals never run along the same line.
The Inputs panel's − and + step the switches through every combination.

Breadboard Simulator

The mouse

Click or drag	What it does
Click · drag a part	Selects · moves it; on a breadboard a chip seats itself across the channel
`Shift`-click a part	Adds it to the selection, or takes it out
`Shift`-drag the empty canvas	Box-selects
Click a pin or a hole, then click…	Draws a wire: each click fixes a square corner; click a pin, a hole or another wire to end it (a wire ending on a wire makes a junction)
Click a wire's open end (the small square)	Carries the wire on from there
Drag a wire segment	Slides it; a jumper on a board moves whole, hole to hole
Click a switch lever or the supply's power button	Flips it
`Ctrl`-click a pin	Lights every wire its signal travels to get there
`Shift`-click a pin, or middle-click it	Rings every pin on its net
Middle-drag	Pans the view
Hover a pin	Says what signal it carries, where it comes from and where it goes
Drag a part back onto the left panel	Takes it off the board (its wires stay)

The keyboard

Key	What it does
`W`	Starts a wire at the pointer, or carries on the open end under it
`/` · `Backspace` · `Enter`	While wiring: turn the corner · take the last corner back · end the wire (so does a double-click)
`R` · `Shift+R`	Turns the selection
`Delete`	Removes the selection, or just the selected wire segment
`Ctrl+C` `Ctrl+X` `Ctrl+V` `Ctrl+D` `Ctrl+A`	Copy, cut, paste, duplicate, select everything
`−` · `+`	Steps a selected DIP switch bank down or up through its values
`P`	Shows or hides the panels over a full-screen board
`Esc`	Ends the wire tool, deselects, leaves full screen
`←` · `→` · `Enter`	During a wiring guide: previous step · next step · do this step

Logic Gate Simulator

To do this	Do this
Type the function	The F = box; `/` from anywhere jumps to it. The keypad under it inserts letters and operators
More or fewer variables	The Variables − / + beside the box (up to 8)
Change F from its truth table	Truth table & K-map: click an F cell, or a K-map cell, to flip that row
Follow one row through the gates	Click the row's number in the truth table
Probe the circuit	Circuit: click an input pin, or its A=0 button, to flip it; wires carrying 1 light up
Simplify, or rebuild in one gate family	Settings → Shape the output
Keep a function	Name it under Saved functions and press `Enter` or Save F; click one to open it

Problem Generator

To do this	Do this
A new problem	Pick a difficulty and a scenario, then Generate a problem, or Surprise me
Answer a step	Type or pick your answer and press `Enter` or Check (Check my table, Check my sorting on those steps)
See the worked answer	Show the answer on a step
Work a problem of your own	Solve yours, then paste an expression, a minterm list, a truth table or the problem's words

On a tablet or a phone

Every tool works by touch. One finger does what the mouse does. Two fingers, and a finger held still, do what the wheel, the other mouse buttons and the keys do — so nothing on this page needs a keyboard.

To do this	Logic Gate Simulator	Circuit Simulator	Breadboard Simulator
Zoom in and out	Pinch with two fingers
Move the view	Slide two fingers anywhere, or drag the bare canvas with one
Move a part	—	Drag it with one finger
Wire	—	Drag from one pin to another, or tap a pin, tap each corner, and tap where it ends	Tap a pin or a hole, tap for each corner, tap where it ends
End a wire, take a corner back, turn the corner, drop it	—	Tap a pin or a wire to end it; tap the starting pin again to drop it	The bar under the board: Done, Back, Corner, Discard. A double tap also ends it
Trace a signal back, show a net	—	Touch and hold the pin, or the wire
Rotate, copy, duplicate, delete	—	Touch and hold the part, or use the toolbar
Select several parts	—	Touch and hold another part and choose Add it to the selection, or turn on box-select and drag
Take a wire off	—	Touch and hold it
Select everything, paste, fit to the screen	—	Touch and hold the bare canvas
Move a breadboard	—	—	Tap it first, then drag it. A finger dragged across a board that is not selected moves the view instead

Held upright, a tablet or a phone has the views along the bottom, and the panel of parts becomes a drawer: tap the handle at the left edge of the canvas to pull it out. Tap a part to put it on the canvas, or pull it sideways out of the drawer and let go where you want it. Turned on its side, a tablet has room to keep the panel open beside the canvas, as on a desk.

A fingertip is wider than a pin, so a press reaches a little further than a mouse click does — beside a pin or a hole counts as on it. For close work, pinch in first.

Controls and shortcuts

In every tool

Circuit Simulator

The mouse

The keyboard

While drawing a wire

Reading the board

Breadboard Simulator

The mouse

The keyboard

Logic Gate Simulator

Problem Generator

On a tablet or a phone

From Boolean algebra to breadboard.