counter

Hello, I am a bit hesistant to ask for help and im sorry, but I have a final project due soon and i have to build an attendance system but I'm struggling a bit and I'm cramped on time due to previous exams and projects, In it I can only use IC Chips and no microcontrollers It has 4 switches...

Hi i want to simulate 0-99 Counter with J-K Flip Flop 74LS107A on proteus and i have finished it but it is not working i mean the 7-segment not working can one help me with it? i will post the picture of the project... thnx :)

Hi. I am looking into a project that would involve measuring the frequency of crystal osc. Aim is to measure accurately without using lab bench equipment. Accuracy: enough to track its deviation from nominal frequency. Nominal freq. of crystal: not decided yet but preferably 10/20 MHz. I'm...

Verilog : It's supposed to be a MOD10 counter but it counts from 0 to 9 and resets to 4, why?? Please give me the solution as a code and explaination for it if possible. module MOD10 (clk, clr, q); input clk, clr; output [3:0] q; wire x, w; assign x = q[3] & q[1]; //...

The attached circuit worked good in the past, it counted from 00 to 59 minutes and then 00. In the new construction, In reverse it counts properly, from 59 to 00 and then 59 minutes. But I recently made another counter on another same PCB design copy and it counts from 00 to 60 minutes in...

Hello allaboutcircuits! The instructions for my task are above. There are no explicit restrictions, but I want to use flipflops for this one. We were taught no prior knowledge except basic gates and elementary logisim operation. I'm learning as I go and so far, an 11-state (0000-1010) up...

Somehow the 7448 ic outputs are not changing even though the inputs are changing. The inputs are from a jk flipflop counter and im having trouble displaying the output of it in a 7 segment display. It's just stuck to the output 9 or 0. Help.

I am given a school project where i have to design a mod 60 counter with start/stop and reset functions on a digital trainer breadboard circuit using two 4-bit binary counter IC chips (74LS93). I am also able to use other basic logic gates such as NAND, NOT, AND and OR gates to construct my...

Hi, is there a way to limit the output of the 74160 4-bit decade counter to a specific range? For example, I only want it to count like this: 00 01 10 11 Then restart to 00 I care only about the first 2 bits.

I want to build a counter and want to display it with 7 segment display. I will use a push button to give a clock pulse so this will be the enter button. What I want is, when the counter is 3 then it will lock my clock pulse or enter button. This means if I click the push button after count 3 it...

Hello there! I'm looking for a THT flip flop IC that I'd like to use as a 1 bit counter, using a push button as "clock" every IC that I found is just so big, as it usually has multiple flipflops in it, with a lot of pins that I don't need. Is there a single Flip flop IC, with less than 16 pins...

Hi, I would like to know if there's any alternatives that can replace break-beam sensors in this situation — a gate that counts how many people has passed through using a sensor implemented on one side. If there aren't any alternatives, can an ultrasonic sensor be used to replace the break-beam...

Hi, Just finished doing my first proper schematic(*) and I'm worried that it's a bloated over engineered lump of components. What I'm trying to do is having 3 LEDs, powered by 2-3 AA batteries fade in and out. I've added a 4th LED which will be on when all 3 are off, I realize that could be...

Hi there, got a serious problem about Counters. i have to create "a circuit that counts from 0 to 9 then from 9 to 0 using two separate counters" and "must consider BUS concept". i used two 74192 and two 74153 Multiplexers ( for BUS ), one of the counters is ascending and another one is...

Hi,in the circuit numbers that come from counter are compared with 1 and the numbers are equal or greater than 1 led turns on.Also when the number reaches 9,it shouldn't move to 0(when press up button) and reaches 0 shouldn't move to 9.(when press down button) On the breadboard upping works...