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Anonymous Poster #1

Pseudo Random Sequence Generator

10/23/2019 11:20 AM

Please. Somebody has pseudo random sequence generator , electronic schematics???
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70AARCuda
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#1

Re: Pseudo random sequence generator

10/23/2019 11:29 AM

ANALOG (hardware) or DIGITAL (software)?

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Gerula
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#2
In reply to #1

Re: Pseudo random sequence generator

10/23/2019 11:33 AM

Analog(hardware)...a sequence with 20 numbers
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SolarEagle
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#3
In reply to #2

Re: Pseudo random sequence generator

10/23/2019 11:54 AM

Figure A. In this simple schematic, a reverse-biased transistor generates electrical noise that is amplified by 2 more transistors, digitized through an inverter, and clocked into a 74HC164 shift register, where it can be accessed by a game program.

Figure B. Breadboarded version of the schematic in Figure A. This type of breadboard has a break in each vertical bus, allowing separate voltages to be used as shown.

https://makezine.com/projects/really-really-random-number-generator/

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Gerula
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#4
In reply to #3

Re: Pseudo random sequence generator

10/23/2019 12:14 PM

I wish a hardware with d-type tilting circuit ...cip DM7474
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SolarEagle
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#5
In reply to #4

Re: Pseudo random sequence generator

10/23/2019 1:44 PM

http://www4.ujaen.es/~gnofuen/Hoja%20caracteristicas%207474.pdf

https://circuitdigest.com/electronic-circuits/simple-tilt-sensor-switch-circuit-diagram

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Gerula
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#6
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Re: Pseudo random sequence generator

10/24/2019 2:40 AM

Yes...but how do i make a pseudo random sequence generator using DM7474 ...i do not understand..i have to use 5 cips DM7474
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Rixter
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#8
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Re: Pseudo random sequence generator

10/24/2019 8:45 AM

A simple pseudo random sequence generator consists of a shift register and one or more exclusive or gates.

To make a shift register out of flipflops, connect the Q output of each flipflop to the D input of the next flipflop. On each clock signal, the state of each flipflop will be passed to the next flipflop.

https://www.electronics-tutorials.ws/sequential/seq_5.html

Five DM7474 chips are 10 flipflops. You can make a 10 stage PRNG with 10 flipflops by feeding back Q7 and Q10 through an exclusive OR gate (DM7486) to the input. Here is a similar example for a 5 stage PRNG feeding back Q2 and Q5.

http://getlofi.com/diy-modular-sequencer-circuit-examples/prngschem/

DM7486 XOR gate

A 10 stage PRNG with feedback from Q7 and Q10 will generate 210-1 or 1023 different codes.
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Gerula
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#9
In reply to #8

Re: Pseudo random sequence generator

10/24/2019 9:05 AM

Yes, but do you know how i do this on the breadboard and on proteus design suit?
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Tornado
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#10
In reply to #9

Re: Pseudo random sequence generator

10/24/2019 9:14 AM

Please quit moving the goal posts.

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Gerula
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#11
In reply to #9

Re: Pseudo random sequence generator

10/24/2019 9:24 AM

And i have to diagram veich
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rwilliams
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#12
In reply to #11

Re: Pseudo random sequence generator

10/24/2019 10:01 AM

You need someone to come over...
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PeterT
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#7

Re: Pseudo Random Sequence Generator

10/24/2019 8:13 AM

A quick Google search for "pseudo random sequence generator using 7474 flip flops" yields 35,800 results and a bunch of illustrations. That would be a good place to start. Do your own homework!

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70AARCuda (1); Gerula (5); PeterT (1); Rixter (1); rwilliams (1); SolarEagle (2); Tornado (1)

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