Wonder Circuits vs HDLSim

Learn digital logic through 62 lessons in 13 chapters. Start with AND, OR and NOT, then build binary adders, feedback circuits, registers, memory and state machines. Assemble a visible four-bit computer and write programs for it. Start with the first 14 lessons and the complete Logic Lab for free. One optional purchase unlocks the remaining 48 lessons and all future core content. No subscriptions or consumables. Build freely in the complete Logic Lab, save reusable chips and share offline blueprints. Works offline, with no accounts, ads or tracking. This is a digital logic simulator; it does not model voltage or current. Campaign lessons still progress in order after purchase.

HDLSim is a digital electronics lab on your iPhone. Write Verilog, compile it for the EPM240 CPLD and watch it run on a virtual development board, with a 2D schematic and a 3D breadboard. WHAT YOU CAN DO • Verilog editor with compilation and error messages. • EPM240 CPLD simulator: load your design and test its inputs and outputs on the board. • 2D schematic: place components, wire them and simulate the circuit. • Boolean equation compiler: truth table, Karnaugh map, minimum form and a gate circuit built with chips. • Step-by-step guided lessons. • 3D bench and breadboard: the same circuit built in 3D, with wires, resistors, LEDs and more. • Guided labs: Ohm's law, dividers, diodes and rectifiers, transistors, op-amps, logic gates, adder, latch, 555 timer and 7-segment display. • Your projects are stored on your iPhone. PLANS • Free: Verilog editor, CPLD simulator, 2D schematic and 3D bench, designs and labs with up to 7 breadboard components on the 170, 400 or 830-point board the circuit needs, and boolean equations of up to 4 inputs and 1 output (the circuit it builds does not count toward the 7-component limit while unedited). Includes ads. • Pro: everything in Free with no ads, designs with more than 7 components, every lab in the catalog and equations of up to 6 inputs and 6 outputs. Pro is an auto-renewing subscription, monthly or yearly, at the price shown in the app. Payment is charged to your Apple ID when you confirm the purchase. The subscription renews automatically unless you cancel it at least 24 hours before the end of the current period. Manage or cancel it in Settings > your name > Subscriptions. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy: https://hdlsim.web.app/privacy.html