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Logic Probe Tester Circuit – Circuit Schematic
Logic Probe Tester Circuit
Logic testers are simple but very helpful devices in testing digital circuits. A logic probe can be designed in many different ways. In this particular des.....
Electronic Dice Circuit – Circuit Schematic
Electronic Dice Circuit
With this electronic dice the result is displayed with LEDs that are placed so every dice face is shown. In the circuit diagram, IC 4022 is used to count t.....
Logic State Indicator – Circuit Schematic
Logic State Indicator
Here is a simple logic state indicator to test whether the output of digital IC is in logic 1 or 0. The Bicolor LED lights Green when the logic state is 1.....
Relay Computer Two – Circuit Schematic
Relay Computer Two
The simple relay adder was built using free NOS relays sometime in 2005, but my goal was to someday build a more elaborate one that could run programs but notfi...
Single Meter Clocks – Circuit Schematic
Single Meter Clocks
An alternating display for my version 1 nixie clock led me to think of new logic designs for switching signals to the display. I took the design of my version 1...
LED sequencer – Circuit Schematic
LED sequencer
The model 4017 integrated circuit is a CMOS counter with ten output terminals. One of these ten terminals will be in a "high" state at any given time, with all ...
3-Bit Binary counter – Circuit Schematic
3-Bit Binary counter
This circuit "cheats" by using only two J-K flip-flops to make a three-bit binary counter. Ordinarily, three flip-flops would be used - one for each binary bit ...
TTL NAND and AND gates – Circuit Schematic
TTL NAND and AND gates
This schematic illustrates a real circuit, but it isn`t called a "two-input inverter. " Through analysis we will discover what this circuit`s logic function is ...
The NOT gate – Circuit Schematic
The NOT gate
The single-transistor inverter circuit illustrated earlier is actually too crude to be of practical use as a gate. Real inverter circuits contain more than one ...
Combinatorial and Sequential Circuits – Circuit Schematic
Combinatorial and Sequential Circuits
To the left in the diagram, you find the micro memory containing up to 64 different addresses each with 15 bits (numbered 1 to 15) that we call the micro operat...
7 segment LED display – Circuit Schematic
7 segment LED display
I have successfully used a 4511 IC to make numbers 1-9 appear on a 7 segment led display, cool. Now how can I use this to say have it display a number .....
Digital Clock Circuit – Circuit Schematic
Digital Clock Circuit
I`m having issues simulating this circuit on Proteus. Please take a quick look and make sure I did`nt make a goofy mistake. I`m also a novice with.....
Random Access Memory?  (RAM) – Circuit Schematic
Random Access Memory?  (RAM)
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Transistor Bistable Multivibrator or Flip-flop – Circuit Schematic
Transistor Bistable Multivibrator or Flip-flop
Electronics Tutorial about Bistable Multivibrator also known as the Bistable Flip-Flop or Two-shot Multivibrator constructed from Transistors or Logic Gates.....
Logic NOT Gate Tutorial with Logic Gate Truth Table – Circuit Schematic
Logic NOT Gate Tutorial with Logic Gate Truth Table
Digital Electronics Tutorial about the Logic NOT Gate also called an Inverter and the Logic NOT Gate Truth Table used in TTL and CMOS Logic Gate circuits.....
Combinational Logic Circuits using Logic Gates – Circuit Schematic
Combinational Logic Circuits using Logic Gates
Electronics Tutorial about Combinational Logic Circuits that use Logic Gates to make Multiplexers, Encoders and Solid State Switches.....
Digital Dice Project – Circuit Schematic
Digital Dice Project
This Digital Dice electronic project uses a combination of 555 timer, 7490 decade counter, 7483 4-bit binary adder, 7447 BCD to 7 Segment Decoder and the 7 segm...
Digital-Circuits – Circuit Schematic
Digital-Circuits
CD4538 is a dual Monostable Multivibrator. When you trigger the chip the output sends off one single pulse or one high-low event. The T+ pin 4 of U1a is the pos...
Electronic Coin Toss – Circuit Schematic
Electronic Coin Toss
Electronic Coin Toss Circuit Diagram This is electronic coin toss circuit using one CD4049 IC (Hex inverting buffer and TTL driver). This IC.....
4033 7 Segment Common Anode Display Counter – Circuit Schematic
4033 7 Segment Common Anode Display Counter
4033 7 Segment Common Anode Display Event Counter Circuit This circuit can count 0 to 9 with reset and display test.....