Advertisement
4-Bit Computer – Circuit Schematic
4-Bit Computer
If you`ve ever wondered how electronic devices like computers can count, this article gives a simple introduction to binary and logic and shows how they are tie...
Iso buffer serial to parallel converter – Circuit Schematic
Iso buffer serial to parallel converter
Using this circuit you will connect to a single parallel port electronic circuits requiring up to 96 digital output, optically insulated lines, 3 to 15V powered...
Fundamentals of Electrical Engineering and Simple combination lock – Circuit Schematic
Fundamentals of Electrical Engineering and Simple combination lock
This experiment may be built using only one 8-position DIP switch, but the concept is easier to understand if two switch assemblies are used. The idea is, one s...
Lights Out circuit – Circuit Schematic
Lights Out circuit
The design is based on the previous analysis of calculating the game in a circular shift register. While designing, it occurred to me that small extensions to t...
Railway circuits – Circuit Schematic
Railway circuits
Digital Command Control, for those who don`t know, offers many advantages over conventional DC analogue control systems. The main one being the simplicity of wi...
Schematics of TTL CPU – Circuit Schematic
Schematics of TTL CPU
I just finished doing the 3rd Eagle layout of the program counter and this one actually makes sense to look at. The first two were a mess of wires intersecting ...
Low/Floating/High Detector – Circuit Schematic
Low/Floating/High Detector
This circuit is a dual low/floating/high logic state detector which enables you to see the logic state of a digital signal pin. Each detector has two LEDs (typi...
Frequency counter hardware keys schematic – Circuit Schematic
Frequency counter hardware keys schematic
This is basically 4 nearly identical debounced switches. The 2 resistors and one capacity at the input of each Schmitt trigger are used for debouncing the switc...
RING COUNTER WITH VISUAL READOUT – Circuit Schematic
RING COUNTER WITH VISUAL READOUT
Uses only six components per stage. Combining of counter and indicator functions gives low battery drain. After reset button is re leased, 0. 22-mid capacitor i...
TRANSISTORIZED THYRATRON RING COUNTER – Circuit Schematic
TRANSISTORIZED THYRATRON RING COUNTER
Each bistable circuit has two opposite-symmetry germanium transistors, two diodes, and four resistors. Additional transistor Q transfers conducting stage to nex...
HEADS OR TAILS GAME CIRCUIT – Circuit Schematic
HEADS OR TAILS GAME CIRCUIT
Designed to simulate by electronic means thetossing of a coin, the circuit is based upon a 4049 hex inverter IC, two of which are used. IC1a andIC1b are wired a...
RING OF 7 COUNTER – Circuit Schematic
RING OF 7 COUNTER
Uses surface-barrier transistors in arrangement wherein pattern of four on stages is stepped along ring, per mining maximum number of stages in ring lo be much ...
TV LINE DECODER I – Circuit Schematic
TV LINE DECODER I
This circuit will produce outputs on TV lines 24 and 257. It was used for a decoder circuit. It uses a CMOS counter and gate logic. Only one pin is used for the...
DIVIDE BY ODD NUMBER COUNTER – Circuit Schematic
DIVIDE BY ODD NUMBER COUNTER
This circuit symmetrically divides an input by virtually any odd number. The circuit contains n+l/2 clocks twice to achieve the desired divisor. By selecting th...
ELECTRONIC DICE – Circuit Schematic
ELECTRONIC DICE
When S1 is pressed, counter U2 is driven by oscillator U1A/U1B and the count (0 through 6) is read on DISP1. R1 and C1 determine the count rate, which should be...
HOCKEY TENNIS HANDBALL – Circuit Schematic
HOCKEY TENNIS HANDBALL
Uses National have sound. MM57100 TV game chip to provide logic for generatingbackgrounds, paddles, ball, and dig ital scoring Circuit generates all necessary t...
XOR GATE UP DOWN COUNTER – Circuit Schematic
XOR GATE UP DOWN COUNTER
One can transform an ordinary binary counter, such as a 7493, into an up/down counter with mode control by adding XOR gates 7486 to the counter`s outputs. The c...
SI ABBREVIATION DISPLAY – Circuit Schematic
SI ABBREVIATION DISPLAY
Programmed Signetics 8223 256-bit PROM is used as alphameric display having five 7-segment digits connected to form alphameric simulation of abbreviations for s...
Four stage ring counter using SUS devices – Circuit Schematic
Four stage ring counter using SUS devices
...
Serial data transfer circuit into shift registers with parallel output to data bus – Circuit Schematic
Serial data transfer circuit into shift registers with parallel output to data bus
...