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DESIGN CONCEPTS
- Binary Numerals Boolean Algebra
BASIC GATE
- NOT Gate OR Gate AND Gate NOR Gate NAND Gate XOR Gate
UNIVERSAL
- NAND - Inverter NAND - The AND Gate NAND - The NOR Gate NAND - The OR Gate NAND - The XOR Gate NOR - The Inverter
  NOR - The AND Gate NOR - The NOR Gate NOR - The OR Gate NOR - The XOR Gate MUX - The Inverter MUX - The AND Gate
  MUX - The NOR Gate MUX - The OR Gate MUX - The NAND Gate MUX - The XOR Gate
COMBINATIONAL
- Four Bit Adder-Subtractor 4-bit Signed Comparator BCD Adder 4X4 Multiplier Circuit Half-Adder Full-Adder
  Half-Subtractor Full-Subtractor BCD to Excess-3 1 to 2 Decoder 2 to 4 Decoder 2x4 Decoder Enable Input
  3 to 8 Decoder 4 Input Priority Encoder 2 to 1 Multiplexer 4 to 1 Line Multiplexer Quadruple 2 to 1 Mux 1 to 4 Demultiplexer
MULTIVIBRATOR
- Basic R/S Nor Latch Gated R/S Nand Latch Gated D Latch Nand Base Gated D Latch Nor Base Data Latch RS Base RS Nor Latch with Enable
  R/S Nand Latch FlipFlop Hierarchy J K FlipFlop Master Slave D FlipFlop Master Slave JK FlipFlop SR Master Slave FlipFlop
  Toggle Flipflop Positve Edge Triggered D FlipFlop
SEQUENCER
- Johnson Counter 4-Bit Counter w/ D-Flipflop 4-Bit Modulo-16 JK Binary Counter Modulo-16 Counter w/ Parallel Loading Parallel Register
  JK Shift Register S/R 6-Bit Shift Register 4-Bit Parallel Access Shift Register 4-Bit Universal Shift Register Up Counter w/ Toggle FF
  Down Counter w/ Toggle FF Up/Down Counter w/ Toggle FlipFlop Set Reset Parallel Shift Register
FSM
- Serial Adder Moore FSM: Control Circuit for Automatic Door
VHDL
GARAGE
SHORT FILMS
COMMUNITY

Java Circuit Simulation Workaround ▾

Due to recent changes by Oracle, java applets have become difficult to run in the browser. To mitigate the troubles, Oracle has provided the following websites to help users troubleshoot: http://java.com/en/download/help/enable_browser.xml and https://www.java.com/en/download/mac_download.jsp

Even after following the above instructions, loading applets may still show warning concerning “unsigned application” and “unknown publisher”. For Teahlab in particular, these warnings are due to the fact that we have opted not to pay a third party such as Verisign to sign our applets. Any warning that comes up when you try to run our applets should emphasize that our applets will always run with “limited access”, which is Oracle’s way of letting you know that teahlab doesn’t do anything on your computer except running the circuits you see: in other words, our applets are safe to run.

Sincerely,

The Teahlab Team

ABOUT US

“A picture is worth a thousand words. A simulation is worth a million pictures.”

ABOUT TEAHLAB
Teahlab is home to the world's most comprehensive library of interactive microchips on the web, complete with full length step by step didactic analysis of every digital circuit. We also boast the world's first and only Integrated Simulator Community, which allows our members to build, simulate, save, and share their own designs. Our Service is provided free of charge, in accordance with our Terms of Use, to any individual or institution soever: this means academic, industrial, governmental, etc. Presently many universities design their digital systems curricula to work with the Teahlab Site — so to achieve greater economy in material coverage.