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A 12 hour clock with no seconds.

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

At the bottom are some gates made of other gates.

Binary Counter

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.

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

A completely original (4-bit) counter I made.

simple computer with clock                                                                                           

commands:

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.

Specs:

RAM:

1KB (as seen in photo)

Clock:

2HZ (as seen in photo)

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.

A simple computer.

(IN DEVOLOPMENT)

commands listed in project.

a timer with a reset and pause button.

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. 

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.