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Tags: clock
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12 Hour Clock Prototype

A 12 hour clock with no seconds.
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1st experiment

There are some counters at the top. Including a .....

At the bottom are some gates made of other gates.
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Binary Counter
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2-Bit Counter (Up and Down)

A 2-bit counter that counts from 0 to 3! :D

Set "Count" to 1 to start counting and set it to 0 to pause the counter. Set "Increment/Decrement" to 1 to count up and 0 to count down.
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there are three different clocks that i have built in this showcase,

they all have some of the same principal rules;

the buttons above the 4 digit bit inputs are to move the face below it up by 1;

the button off to the side on the first and second are used to reset the clock if need be;

the input next to the box labeled 'P' is to turn it on or off

they all have slightly different quirks though

the first one is the very first prototype of a digital clock that i have made

the second is a smaller design that i shoved the wires from the previous into their own bok to make it look nicer; this was the first legitimate one though.

the third and final clock is what i dub the mini clock because it is my smallest clock that i have ever made; i essentially made some tweaks to the wiring and then put that on to its own very small circuit, the mini has a toggleable reset and power
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A completely original (4-bit) counter I made.
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Asynchronous Counter
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simple computer

simple computer with clock                                                                                           


10001: Clock

00011: Do a OR operation*

01101: Do a AND operation*

01110: Do a NAND operation

01001: RAM edit/read**

*Use number inputs too do the logic.

**Use data inputs edit/assign values to an 8-bit RAM. Use the R/W pin to read & write.



1KB (as seen in photo)

RAM size


2HZ (as seen in photo)
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Dice Project Phase 6

Push button starts a rapid count while the button is pressed. Letting go of the button prevents the clock signal from getting through to the counter.
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A simple computer.


commands listed in project.
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a timer with a reset and pause button.
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There's several buttons in the circuit. If you figure out what those do, the laws of time of this circuit's universe are yours to behold.

Note to future me to fix the following bug (if it even exists in the real world due to propagation delay). 

The set 1 function of #2 works in the sub-circuit but fails to work for the output pulse in the main circuit. This is troubling to say the least. So I've decided to change hour 12:00 to 00:00.
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This is a simple digital clock with basic combinational and sequential logic circuits.

It can display seconds, minutes, and hours

Users can set time by clicking the button and using the multiplexer to choose which to change.

Also, the design for the 4bits 7segment display and 3 bits 7segment display is inside.
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DEC hw7
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Licznik asynchroniczny modulo 4 liczący od tyłu (11 -> 10 -> 01 -> 00) wykonany na przerzutnikach typu jk
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For the best experience set the clock speed to as low as you can.

This is a work in progress computer.

 Make sure before using the computer click the reset button. Now the computer should be primed and ready. You can use different programs by connecting the EEPROMs in the program socket where the red arrows are pointing then set "turn on" to 1. 

Description of programs:

is 4 equal to 4:     This displays a one on the hex display because 4 is indeed equal to 4 and 1 basically means true to a computer.

write a number:     This displays on the hex display whatever number is being inputted on the "input a number" stepper.

jump showcase:     This uses the jump command to turn on and off the hex display in an infinite loop.

blank:     This is an empty EEPROM,  if you want to, copy paste it then write some code with the coding interface on it and plug it into the socket. Make sure not to just code random gibberish as this may cause the cpu to have an error.
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Four‐bit binary counter with parallel load. Do check it out. It has been tested!
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An infinitely looping download bar made from a johnson's clock