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Hi Iam facing displays flickering problam in my project. Here iam using 74LS373 latches. Iam useing same hardware what vicky19 used . Instated of Bc547 iam using data latches. This code i used in my project sbit c1=P3^0; sbit c2=P3^1; sbit c3=P3^2; s1,s2,s3=data; /*Example:voltage=4.57v*/ while(1) {
connect your counter input to any of the external interupt 0(p3.2). #include.... int counter; . . . . void externalcount interrupt 0 { counter++; } void init() { ;enable external interupt } void main() { init() while(1) { ; convert the (...)
hi :D i am trying create 3 digit counter 7 segment. Using pic and basic language my question why 7segment brightness can not same. my program i deploy from sample program. any one can help me? thx in advance original program Dim digit As Byte 'input variable for GETMASK subroutine Dim digit1 As Byte 'current (...)
Here is my recent project using is pretty simple and useful for Arduino beginners. 83767 Single digit Decimal counter using Arduino You cam find the schematic and code in my Electronics blog -
Hi friend please help me for design of 24h clock /3 digit counter just with gate & BCD counter IC thanks
Hi, There I am looking for up and down counter project with three digits. if anyone made this project, would you please post it. I am waiting your posts.
hello everybody.. i've got a problem here where i can't see the display on my led matrix.. i'm doing a counter and using the led matrix as a display. i've writing a program using assembly languange. i also checking the voltage between each ic and each output.. the voltage showed around 4~5V but the led matrix still don't light on.. i hope
i need 2 digit counter 00 until 99 and repeat using state machine...with RTL Thanks By, cllee
You can build it with only 2 x MC14553 + 1 x MC14543, look at inside the MC14553 datasheet.
hey everyone. i'm trying to eventually build a six digit counter for common cathode seven segment leds. I started off with an example that did two just fine. but everytime I try to add any more to it it refuses to work. I copied an example from a post on this site on how to multiplex them. but still no luck. any ideas? unsig
I did my Fisrt FPGA project, that is a free running 4 digit counter, Is working like a charm but I think is to much for to litle. Is my design ok, ? Have any way to optimize for less resource. I'm a newby on FPGA, but a experienced microprocessor programer, I'm afraid to use old stuff that is not the best for Fpga world. Please coment a
If you show your schematic in PNG format, you'll probably get some help. Not everyone has Proteus 8 and many dont use Proteus at all. As for me, I am still using ver 7.8 SP2. Allen
With 4 digit counter and a 7segment driver your design needs 23 macrocells (4x4 +7) ....more if you want the latches between counters and driver. So you can't fit it into a single PAL or GAL (10 macrocells)l A small CPLD (64 macrocells, maybe 32) from Altera, Xilinx, Lattice..... should handle your design. Regards
Hi, I am working on a 3 digit counter and want to display a number, let's say '263'. This value is stored in a variable (word). To display the number correctly I need to split this number into three separate variables. e.g. 2 into var1 6 into var2 3 into var3 Can anybody help me with a piece of code of with a hint? Thanks! P
hi frnz i m designing a simple five digit counter which has the input sensor .the sensor is proximity sensor with either pnp or npn type output. the range is from 10 v to 30 v for pnp or -10 to -30volts for npn. now i have to feed this to 8051 .how to do this please help. will be waiting for response bye
A 11 digit counter will work. Output should be high continously for a period less then 11 and then low for the rest of the cycle. If outout is high for 2 clocks then it should be low for 9 clocks. 3 8 4
use 4029 ic it is a decade counter and internal 7 segment driver to its input clock connect a 555 which is generating a output waveform of 1 sec you will get the seconds displayed in a simple circuit without using a microcontroller
I'm trying to build a circuit to count the number of steps when I go on a run. I need to know the best way to trigger the action of taking a step. The 4 digit counter is no probl em but a switch in the shoes doesn't sound like a good idea. What are some of the other methods to trigger this. I thought about a cds in the shoe but the doesn't soun
what is the least count of frequency meter used in microwave experiments
hi i need to display received string on serial port of 89c52 to display it on seven segment. how can i perform the received data string to 7 segment i am receiving 10 char string and want display them on 10 different 7 segment.
Use this for sensing pulse : Output from EasyPulse connect to 3-digit counter circuit with 89C51/C52. You can replace TCRT1000 with L-53P3C 5mm phototransistor or some other, and MCP6004 can be replaced with LM324D, for TX led I use red 5mm high bright 15000mcd, and all works fine. This circ
Probably I didn't understand correctly, but if you have a multiplier y=A*B where A and B are represented by means of 10 bits each, the possible combinations should be 2^10*2^10=2^20
When coming to interfacing many seven segments it is advised to use decade counters in order to conserve the number of pins you dedicate to the seven segment. But iam not sure i understand your question fully but upto my understanding using this7 segment coun
You can always start by writing the 3-digit counter and verify that it is working. If it counts correctly from 000 to 999. Then write the UART communication part to receive text from another mcu. You can either test it with proteus sim using the "virtual terminal" to make sure that it is working properly by sending the command text to it to
hi evrey one; i need some Vhdl Files about 7 Segment counter(4 digit). and Moris Mano Cpu's Design in vhdl. also any other kind of ALU's are wellcom. tnx to all
i need example code counter 2 digit switch up-down 0-99 by 16f877a file.pbp
Hello to all, I?m newbie in VHDL programming on FPGA. I need help from all of you out there. Right now I try to write a code for 2-digit BCD down counter, LCD display message and synchronization between both of them. For 2-digit BCD down counter, here?s my code library IEEE; use IEEE.std_logic_1164.all; use (...)
a 8051 or a Pic microcontroller will solve ur problem.Use a 2 dimensional arrray for the purpose.
hello to everyone,,, i have a problem in designing the pcb layout of a 2 digit 7segment display counter using 74LS47 and 74LS192 IC's,,,,,, can anyone help in designing it's pcb layout,,,,,,, thank you very much ^_^
That’s not so complicated, but you need to provide the code for the new 2 digit display… - - - Updated - - - :-D See for example:
There's an Australian hobbyist magazine called "Silicon Chip" that ran such a project a few months back - have a look at: Item 6 in the table of contents is part 1 of their "2.5 GHz 12 digit frequency counter" using a PIC16F877 and 7 segment displays. Yes I
1. What type of unit get for counting is potential free or any other 2. How u set Preset count value 3. What bout power supply 4. Is any relay or Buzzer output after Count complete 5. Is project use for commercial level or Project level 6. What type Enclosure u plan Answer this
I just try to design bcd counter (00 to 66) by using verilog. I write verilog code in xilinx and test bench waveform show correctly. Then I try to download to xc9572 cpld. After downloading, when I try to test it start count from 00 to 66 at the first time. Then it back 08 (instead of going back to 00)and later the counter show 08 to 66 only. From
Actually I plan to test the 2 digits BCD counter display on 7 seg. (in circuit I used two 7493s). I want to use (your) counter as a module and other module will call this module to run 2 digits BCD counter display on 7 seg. How to do. Pls..
For someone who starts experimenting with 2051 this is a good site to visit: (driving 7-segment + keypad ++++) Regards, IanP
ok , u can use bistables to do it ,its very simple , look at the pics , it uses 4 jk bistables to get ur number into 4 digit , then u can use any transcoder to get it working on a 7 segment. i'm joining here also the 74ls192 (an up down counter ) datasheet . if u need anything else just tell me and i'll try to make complete schematics for u (wh
Dear all, Plz download the examples of RTL hardware for counter....(2 digit)... Plz reply me if got any questions.. library IEEE; use IEEE.STD_LOGIC_1164.ALL; use IEEE.STD_LOGIC_ARITH.ALL; use IEEE.STD_LOGIC_UNSIGNED.ALL; entity doubledigit is Port(CLK : in std_logic; rst : in std_logic; LEDS1,LEDS0 : out (...)
I;ve personally build this, working..... If u wan to have six 7-seg, just modify the schematic (add 2 more 40110 ICs), and the wiring do as the previous one, then should be ok......
"i think even now 20GHz is too high for frequency counters..." I do not agree. Nowadays there is very cheap logic available with toggle rates well beyond 20GHz, so counters with input range >20GHz and resolution of 1Hz are easily possible...
Taka a look at the 74C92X-seires .. "4-digit counters with Multiplexed 7-Segment Output Drivers" Regards, IanP
Dear mister_rf This I attach the counter schematic, from our discussing previously, I have few question to you, there are: 1. How to modifying the lowest number (on schematic) will be fixed number if I activated the stop button? 2. I made start/stop function from pulse generator output, is it true? If no, please your suggestion h
i cant find any attachments with this post.. please can u send those attachments as early as possible :) There are two attachments at the end of post #2
i need to do a 2 digit bcd counter testbench verilog ,here i attached the verilog but i dunno correct a not Where is the attachment Nandhu
can any one help me plz on my project.. i need a ckt that count 0-24 and 24-0 plz help me..
My teacher give me exercise Design 4 digit conuter by ic counter(digital IC): _up/down counter 0000-9999 _control up/down _we can setup initial cardinal number thank you P/s: i'm vietnamese, so i write english not well
you can create a 2 digit BCD counter by using two 4 bit counters and some logic gates.The main idea is that when the count in the first(LSB) counter reaches the value "1001"( 9 in decimal) it is reset to zero and the second(MSB) counter is incremented by '1'. I am not sure about why you need a 4:1 MUX for (...)
read this article, it may help you to design the counter
Hello everyone, I made a counter with 3 sectional of the schematic in attachments.On schematic is another pic, and I use the 16f76, 4MHz oscilator.Display with common cathode. In the Basic, I got the written code and tried to adjust it to end,but i do not now how and i ask for help! The counter is conceived to work like this: When the timer turns
This may be what you have in mind. . Just expand to 4 devices. It's easier to cascade 74LS191 since it has RIPPLE CARRY OUT and DISPLAY BLANKING features.
can someone help me on how to make down counter on 7-segment? the counter must count from 99 to 00.. thanks :)