DCircuit Lab HD at Mac App Store analyse

App power index: 100 (based on ranks around App Stores today)
Productivity Education
Developer: Fabrizio Boco
Price: 0 free
Current version: 2.1, last update: 1 year ago
First release : 23 Sep 2010
App size: 83.5 Mb
4.8 ( 9168 ratings )
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Estimation application downloads and cost

> 2.2k
Monthly downloads
~ $ 900
Estimation App Cost


DCircuit Lab HD is a tool for simulating combinatorial and sequential digital circuits.

Circuits can be simulated in two ways:

1) one single step: all the outputs values are evaluated at the same time.

2) step by step: outputs and gates are evaluated one step a time. This shows how each gates output changes and how changes propagate through the circuit. This feature is very useful to understand complex circuits behavior.
At the end of each simulation step, each gate may have a different color:

■ black: gates output unchanged during the just ended simulation step
■ dark green: gates output evaluated during the just ended simulation step
■ light green: gates output evaluated during the just ended simulation step, gate needs to be evaluated again during the next simulation step
■ blue: gate needs to be evaluated during the next simulation step

At the end of the simulation, each wires color corresponds to the digital value carried on itself: red for 1 and gray for 0.

If circuit contains clock inputs, its simulation is dynamic. This means that outputs change accordingly to the clocks. During this dynamic simulation, user can change inputs values to study the circuit behavior. Once the simulation is stopped, a circuit timing chart is available.

Circuits are built using basic components, gates and flip-flops:

■ input pins
■ output pins
■ clock
■ wires
■ 2 inputs and 3 inputs AND gates
■ 2 inputs and 3 inputs NAND gates
■ 2 inputs OR gates
■ 2 inputs NOR gates
■ 2 inputs XOR gates
■ NOT gates
■ Flip-flop RS, JK, T, D
■ Multiplexer (4 outputs)
■ Demultiplexer (4 inputs)

Circuits may be controlled by means of the following gesture:

■ Drag: to move the circuit into the desired position
■ Tap on a gate: to modify the gate
■ Double Tap on a gate: to modify the gate
■ Double Tap on a input pin: change its value from 1 to 0 or from 1 to 0
■ Pinch: to zoom in and out
■ Double finger double Tap: to reset position and zoom level to the original values

Circuits may be easily stored and reused.

Some video tutorials are available to learn using the application. Visit the site to see the tutorials.
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Available in countries
Country Price
Canada 9.99 CAD
China 48 CNY
France 7.99 EUR
Germany 7.99 EUR
Italy 7.99 EUR
Netherlands 7.99 EUR
Portugal 7.99 EUR
Spain 7.99 EUR
Poland 7.99 EUR
UK 6.99 GBP
India 699 INR
Japan 1000 JPY
Korea, Republic Of 9900 KRW
Poland 39.99 PLN
Russia 599 RUB
Turkey 229.99 TRY
USA 6.99 USD
Korea, Republic Of 7.69 USD
Ukraine 7.99 USD
Available for devices
iPad2Wifi, iPad23G, iPadThirdGen, iPadThirdGen4G, iPadFourthGen, iPadFourthGen4G, iPadMini, iPadMini4G, iPadAir, iPadAirCellular, iPadMiniRetina, iPadMiniRetinaCellular, iPadAir2, iPadAir2Cellular, iPadMini3, iPadMini3Cellular, iPadMini4, iPadMini4Cellular, iPadPro, iPadProCellular, iPadPro97, iPadPro97Cellular, iPad611, iPad612, iPad71, iPad72, iPad73, iPad74, iPad75, iPad76, iPad812, iPad834, iPad856, iPad878, iPadMini5, iPadMini5Cellular, iPadAir3, iPadAir3Cellular, iPadSeventhGen, iPadSeventhGenCellular, iPadProSecondGen, iPadProSecondGenCellular, iPadProFourthGen, iPadProFourthGenCellular,