I2C PROTOCOL
I2C PROTOCOL The I2C bus has been developed by Philips. The I2C bus was designed to interact within small no. of devices on a single card, such as to manage the tuning of car radio or TV. It allows integrated circuits to communicate directly with each other via simple bidirectional 2-wire bus. I2C Features: > Only two bus lines are required: serial data line (SDA) and a serial clock...
November 16th, 2011 by admin
Fuse bit config for AVR microcontroller
The first thing is,we have to set the configuration bit before burning the hex file into the chip. Here is an example for fuse bit settings:— fig-a.1 (wrong configuration) There are Four bits for controlling clock sources: CKSEL0, CKSEL1, CKSEL2, CKSEL3. For your required clock settings set those four fuse bits according to the data sheet of your controller. Start-up times are determined by...
October 19th, 2011 by admin
Logic signal voltage levels
Logic gate circuits are designed to input and output only two types of signals: “high” (1) and “low” (0), as represented by a variable voltage: full power supply voltage for a “high” state and zero voltage for a “low” state. In a perfect world, all logic circuit signals would exist at these extreme voltage limits, and never deviate from them (i.e.,...
August 22nd, 2011 by admin
Hardware interrupt using ATMEGA-16
Write down the code at AVR-STUDIO-4: ( Try to understand yourself) /////////////////////////////////////////////////////// #include <avr/io.h> #include <util/delay.h> #include <avr/interrupt.h> volatile unsigned char flag123=0; /***** Function To Initialize Ports*****/ void init_ports() { DDRA = 0xFF; PORTA = 0x00; DDRB = 0xFF; PORTB = 0x00; } /***** Function...
August 8th, 2011 by admin
How to create always visible ‘div’ (even you scroll) in your web page
You might have seen floating content of web sites which is always visible on the page even if you scroll it. This is easy achieve thing by using just CSS.The below step by step process will guide to how to add a always visible div on web page. Step 1 Create a css class and name it “visibleDiv” (or the one you like). And add position as “fixed”; <style type="text/css"> <!-- .visibleDiv { ...
August 8th, 2011 by admin
SQL statement in C#.net
INSERT INTO: The INSERT INTO statement is used to insert a new row in a table. The statement can be written in two ways. Does not specify the column names only their vaues: INSERT INTO table_name VALUES (value1, value2, value3,…) Specify both the column names and the value to be inserted: INSERT INTO table_name (column1, column2, column3,…) VALUES (value1, value2, value3,…) tbl_event:Example: string...
August 4th, 2011 by admin
Creating an Input form using HTML & PHP
Write down the following code : <html > <head> <title>2nd page</title> </head> <body> <form action="isert_in_db_full.php" method="post"> <br/> First name: <input type ="text" name="first_name"/> <br /> <br/> Last name: <input type ="text" name="last_name"/> <br/> <br/> Age: <input...
August 3rd, 2011 by admin
G-Map
function initialize() { var latlng = new google.maps.LatLng(23.749324,90.3971432); var latlng2 = new google.maps.LatLng(23.749324,90.3971432); var myOptions = { zoom: 18, center: latlng, mapTypeId: google.maps.MapTypeId.ROADMAP }; var myOptions2 = { zoom: 15, center: latlng2, mapTypeId:...
July 31st, 2011 by admin