Friday, 25 October 2013
capturing instant images from anywhere
How To Trick Someone With A False Desktop Background
Want to trick
your friend with a false desktop background then follow the following steps:
Step 1: go to
your laptop’s desktop background and press PrntScr tab from keyboard
Step2:go to
paint and press Ctrl+V tab from keyboard and then save it
Step 3: then
set the saved file as desktop background
For example see
the false desktop background given below:
By setting the
saved file as desktop background any one will feel that its original desktop
background..When they will click the desktop icon’s it will have no
effect..hence this is an effective way of fooling anyone..
You can set
anything as desktop background by following the above steps.. You can capture
scenes from games,capture moments from movies, capture pics, capture any page
in fb,skype,twitter etc
Thursday, 10 October 2013
solve slow boot and system load problems
Tweaks
to solve system boot , slow loading problems
Do your system boots slowly ????
Do your system loads desktop slowly ??
All your problems are solved here by
technocrats
Follow the steps carefully…………
1)
Press window key + R and type msconfig
2)
Go to general tab
3)
Check all boxes for selective startup
4)
Go to startup tab
5)
Uncheck boxes for adobe list of all programs,IDM,etc. any program
you don’t want to run on startup
6)
Click on services tab
7)
Uncheck all the applications and services you don’t use often, if
you have oracle installed then uncheck it.
Reboot your system
If problem yet persist……
Download advanced system care Pro software from any
site google it and you will get many download links
The setup is of 9.7mb
Install it don’t worry it will not harm your
system click on care and wait for 10mins it will make everything ok
Then click on utilities and try more things if
you want
Never click the booster on
Again type on window key +R and write %temp%
Hit enter
Delete all files in the folder if some files
prompts as cant be deleted ignore it
Empty your recycle bin then.
Restart your system
Yet problems are there………….????
Unscrew your CPU or laptop
Unplug harddisk cable
Clean all dirts with a painting brush slowly
Let it be cooled for 30minutes fit all the
parts
Start and see the problem will be gone
IF the problem is still there then you need to format your system
If problem is solved by step 3 then change your cooling fan of CPU
For any assistance comment below your comments are valuable to us
As it will help us to learn more
Sunday, 25 August 2013
Complete stack program using switch case:
#include<stdio.h>
#include<conio.h>
#define max_size 40
typedef struct stack
{
int element[max_size];
int tos;
}stack;
void init_stack(stack *);
void push(stack *,int item);
int pop(stack *);
void display(stack *);
int main()
{
stack s;
int i;
int ch;
init_stack(&s);
push(&s,1);
push(&s,2);
push(&s,3);
push(&s,4);
push(&s,5);
while(ch!=4)
{
printf("\n press 1 to push \n");
printf("press 2 to pop \n");
printf("press 3 to display \n");
printf("press 4 to quit \n");
printf("enter your choice: \n");
scanf("%d",&ch);
switch(ch)
{
case 1:
printf("\n enter the element to be pushed \n");
scanf("%d",&i);
push(&s,i);
break;
case 2:
i=pop(&s);
printf("\n you have popped value %d \n",i);
break;
case 3:
display(&s);
break;
case 4:
break;
default:
printf("\n wrong choice try again \n");
}
}
getch();
}
void init_stack(stack *s)
{
s->tos=-1;
}
void push(stack *s,int item)
{
if(s->tos==max_size-1)
printf("overflow situation \n");
else
{
s->tos=s->tos+1;
s->element[s->tos]=item;
}
}
int pop(stack *s)
{
int data;
if(s->tos==-1)
{
printf("underflow situation \n");
return NULL;
}
else
{
data=s->element[s->tos];
s->tos=s->tos-1;
return(data);
}
}
void display(stack *s)
{
int i;
if(s->tos==-1)
printf("stack is empty, nothing to display \n");
else
{
for(i=s->tos;i>=0;i--)
printf("%d ",s->element[i]);
}
}
How we can see hidden files from pendrive
go to cmd(command promt)
and write the drive name of pen drive and then write the command as follows:
attrib -s -h /s /d *.*
for example:
J:
attrib -s -h /s /d *.*
Here, 'J' is the drive name.. while writing the command take proper care of the spaces...attrib then space then -s then space then-h then space then /s then space then /d then space then *.*
Saturday, 17 August 2013
static charge detector
Current leakage detector
Introduction:
This is a static charge detector circuit.It detects the leakage of charge from any circuit,mains,within walls,etc.
Now a days wiring in houses are done within the walls and in the condition of charge leakage it becomes impossible to detect where is the fault.In such cases the whole wall has to be broken down for repairing.
This causes loss of time and money.It is a major problem in almost all building and appartment in this modern age.
To provide beautification to houses,flats and shops the interior wiring is done within walls but during the problem in electric faults it also causes heavy loss of money.
Circuit:
Components: 1) resistors(100k,100k,220k)
2) 3 transistor BC547
3) 6v dc supply
Description:
Here 3 BC547 transistor are used.
the emitter of every transistor is connected to the base of other.
at the place of detector you have to use any metal or conductor.Here the 3 transistor are used with 3resistors
220k resistor is used at last transistor to provide perfect voltage drop across the Led to make it work.
other two transistor is used with 100k resistor.
Here the circuit works on the principle of charge gain the charge detected is multiplied by gain to give the result in form of led glow.
the gain is simple 100k*100k*220k
the detector is capable of detecting any static charges.
For any further assistance or problem kindly comment below,
We appreciate your comment and feel pleasure in answering your queries because it makes us gather more knowledge and improve our post.
Wednesday, 7 August 2013
wireless remote control car
WIRELESS REMOTE CONTROL CAR
REQUIREMENTS:
1) ASK TRANSMITTER RECIEVER PAIR(100mhz
2) HT12E(ENCODER) AND HT12D
(DECODER)
3) 750K,33K (RESISTORS)
4) 0.01UF (CAPACITOR)
5) 2PIECES 9V BATTERY
6) 4 PIECES OF WHEEL 7CM DIAMETER
7) 4 PIECES GEARED MOTOR 500RPM
8) A PIECE OF PLYWOOD(SQUARE)
CIRCUIT DIAGRAM:
FOR MAKING THE CHASIS FOLLOW http://modern-engineering.blogspot.in/2013/06/remote-controlled-wired-robot-car-one.html
CIRCUIT EXPLANATION:
THE RED LINE IN THE CIRCUIT DIAGRAM IS THE ANTENNA.
PIN NO. 1-9 OF BOTH ENCODER AND DECODER IS GROUNDED SO THAT THE ADDRESS
OF BOTH ENCODER AND DECODER REMAINS THE SAME.
2 DPDT SWITCHES ARE REQUIRED
THE CONNECTION OF DPDT SWITCHES IS DRAWN IN THE DIAGRAM.
THE +VE OF THE SWITCH 1 IS CONNECTED TO D0 AND THE -VE IN D1
SIMILARLY THE +VE OF SWITCH 2 IS CONNECTED TO D2 AND THE -VE IN D3
PIN 14 IS ALSO GROUNDED.
DONT GET CONFUSED WITH THE +VE AND -VE OF SWITCHES WHICH IS TO BE CONNECTED
TO THE 9V BATTERY.
SEE THE DIAGRAM CAREFULLY AND UNDERSTAND IT.
SAME 9VOLT BATTERY CAN BE USED FOR SWITCH AND TRANSMITTER CONNECTION.
IN THE TRANSMITTER AS WELL AS RECIEVER PART THAT IS HT12E & HT12D, A
OSCILLATOR IS CONNECTED WITH PIN 15 AND 16 THEREAFTER THE RESISTORS ARE
CONNECTED.
IN THE RECIEVER A434 PIN 6&7 IS SHORTED AND CONNECTED TO PIN 1 AND
THEREAFTER GROUNDED.
PIN 2 IS CONNECTED TO PIN 14 OF HT12D
PIN 3 IS CONNECTED TO PIN 17 OF HT12D
PIN 4&5 IS SHORTED AND CONNECTED TO PIN 18 OF HT12D
OUTPUT FROM PIN 13 IS CONNECTED TO
+VE POINT OF BOTH THE WHEEL OF ONE SIDE OF CHASIS
AND OUTPUT FROM PIN 12 IS CONNECTED
TO -VE POINT OF BOTH THE WHEEL OF ONE SIDE OF CHASIS
OUTPUT FROM PIN 11 IS CONNECTED TO
+VE POINT OF BOTH THE WHEEL OF OTHER SIDE OF CHASIS
AND OUTPUT FROM PIN 10 IS CONNECTED
TO -VE POINT OF BOTH THE WHEEL OF OTHER SIDE OF CHASIS
CONTROLLING OF CAR:
SWITCH 1 SWITCH2 MOTION
FORWARD FORWARD FORWARD
BACKWARD BACKWARD BACKWARD
FORWARD OFF RIGHT TURN
OFF
FORWARD
LEFT TURN
FORWARD OFF 360
DEGREE TURN
EXTRA THEORY:
EVERY SIGNAL CAN BE TRANFERRED OVER
THE SPACE IN A FORM OF 0 AND 1 WHERE 0 REPRESENTS LOW VOLTAGE AND 1 REPRESENT
HIGH VOLTAGE.
HERE ENCODER ENCODES THE INSTRUCTION IN 0 AND 1 FORMAT AND THE DECODER
AGAIN DECODES IT TO INSTRUCTIONS TO BE PERFORMED.
TRANSMITTER IS THE ONE WHICH
TRANSMITS THE ENCODED SIGNAL AND RECIEVER IS THE ONE WHICH RECIEVES THE
TRASNMITTED SIGNAL.
THE TRANSMITTER HAS 8 BIT ADDRESS
BUS WHICH IS PIN NO. 1 TO 9
AND SIMILARLY RECIEVER HAS 8 BIT ADDRESS BUS FROM PIN NO. 1 TO 9.
SO HERE BOTH ARE GROUNDED FROM PIN 1 TO 9 SO THAT THE ADDRESS REMAINS THE
SAME.
IF THE ADDRESS IS NOT SAME THEN THE SIGNAL TRANSMITTED IS NOT RECIEVED BY
THE RECIEVER.
FOR MORE KNOWLEDGE ON
ENCODER,DECODER FOLLOW DIGITAL ELECTRONICS BOOK BY ANAND KUMAR OR RP JAIN.
AND FOR TRANSMITTER-RECIEVER FOLLOW
ANALOG COMMUNICATION BY BPLATHI &AK LATHI OR SANJAY SHARMA
THE CIRCUIT IS MADE AND TESTED BY ME, IF YOU HAVE ANY PROBLEM REGARDING THE CIRCUIT THEN PLEASE COMMENT BELOW.
ratan.singh@ieee.org
Thursday, 27 June 2013
c program to make password protected folder
This is a program to open any folder in c drive in which you have set a password...
#include<stdio.h>
#include<conio.h>
#include<string.h>
#include<stdlib.h>
#include<process.h>
int main()
{
char string1[20]="abcdefgh";
char string2[20];
int i;
printf(" enter password for the notepad file that you want to open \n ");
gets(string2);
i=strcmp(string1,string2);
if(i==0)
{
printf(" password is correct ");
system(" explorer c:\\bluej ");
}
else
printf(" invalid password enter the correct password ");
getch();
}
Here, the program is written in dev c++ instead of void , int main() is used...."abcdefgh" is the password name and "bluej" is the folder you want to open..you can write any other folder name and give any other password....
and note that the folder which you want to protect by password has to be hidden
to do that ..........
1) right click on the folder icon
2) go to properties
3) under the general tab click on hidden tab.........
if you have any problem or suggestion your comments are invited.....
#include<stdio.h>
#include<conio.h>
#include<string.h>
#include<stdlib.h>
#include<process.h>
int main()
{
char string1[20]="abcdefgh";
char string2[20];
int i;
printf(" enter password for the notepad file that you want to open \n ");
gets(string2);
i=strcmp(string1,string2);
if(i==0)
{
printf(" password is correct ");
system(" explorer c:\\bluej ");
}
else
printf(" invalid password enter the correct password ");
getch();
}
Here, the program is written in dev c++ instead of void , int main() is used...."abcdefgh" is the password name and "bluej" is the folder you want to open..you can write any other folder name and give any other password....
and note that the folder which you want to protect by password has to be hidden
to do that ..........
1) right click on the folder icon
2) go to properties
3) under the general tab click on hidden tab.........
if you have any problem or suggestion your comments are invited.....
Saturday, 22 June 2013
c program coding
C program to open files in pc
this is a program to open notepad.exe in your desktop you can change the file names to open any files by specifying the correct path and following the same codes..........
c program is the easiest of all programming but just learning to add numbers or matrices has no use because a calculator can even do that.
the main utility of this language is to build a software and even can be used to build up games and viruses.
science can be use for destruction as well as for helping the people and i dont go for destruction so i am not going to post anything about making virus with c language to harm pc or any other systems.
this program opens the notepad
#include<stdio.h>
#include<conio.h>
#include<stdlib.h>
#include<process.h>
int main()
{
system("C:\\windows\\notepad.exe");
getch();
}
<process.h> is a predefined library header file used with <stdlib.h> to interface the program with the files stored in pc.
we can use this code method to make more complex program to run different files and work on them.......
the program is written in dev c++ if you write it in turboc++ then instead of int main() use void main()
for any further assistance or query or suggestions your comments are invited.
Monday, 17 June 2013
8051 interfacing with the buzzer
8051 interfacing with the buzzer
components: 1) AT89C51 microcontroller
2) crystal oscillator
3) k1 buzzer
4) 4.7k resistor
5) 2 pcs 0.01uf capacitor
6) 5v power supply
7) inverter
Description: this is the post about interfacing microcontroller with a k1 buzzer.
pin 40 and 31 is connected to vcc(5v). port 1.5 is connected with
a inverter and then to the buzzer.pin 18 and 19 are connected to a crystal oscillator with ceramic 0.01uf capacitor.
The buzzer gets turned on when port 2.3 is high.
For resetting the buzzer pin 31 and 3 are connected together with 1uf capacitor and and then connected to ground through 8.2k resistor.
CODE:
org 00H
HERE: JNB P2.3,HERE ;keep monitoring for high
SET B P1.5 ;set bit P1.5
CLR P1.5 ;make P1.5 low
SJMP HERE ; keep repeating
END
the code is compiled in keil uvision software.
For any assistance or problem or query comment below.
happy innovention...................................
password: circuitsandprogram
download link of complete project: http://d01.megashares.com/dl/
Thursday, 13 June 2013
RC robot car using DPDT switch
Remote controlled wired robot car
one of my favourite and easiest design of making a robot car
components:
1) 2 nos. dpdt switch
2) 4 nos. 500 rpm or above geared dc motor
3) 4mt or more strip of wire
4) 12v dc supply
first part is to make the chasis for the car
take a square plywood sheet or anything which you want as a chasis,then make holes on it to fit the four geared motors and then fix the motors in the holes
next is the connection of dpdt switvhes
connect it as shown in diagram
connect all the positive ends of 1st two motor of one side to one dpdt switch and the other side to other dpdt switch
connect it to the motor now by a strip wire
for power supply, 12v laptop charger or direct 12v supplies can be used
controls
forward : press both the switch forward
backward: press both backward
right : press the only right one forward
left: press only the left one forward
this was a simple dpdt switch controlled robo car
for any queries,suggestion or advice kindly comment below or directly mail me at ratan.singh@ieee.org
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