In this article, we will make an electronic digital lock using the 4×3 keypad and 8051 microcontroller, basically, an electronic lock is password protected lock and it is an application of a keypad. Door lock system is an example of the electronic lock and it’s protected by a password, which only unlocks with a specific password and operated […]
Electronic digital lock using the 8051 microcontroller and keypad Read More »
A keypad interfacing with 8051 microcontrollers is interesting. A keypad is an organized matrix of switches in rows and columns and it comes in the various form like a numeric keypad, alphanumeric keypad. It also comes in different size like 4×3, 4×4, etc. In real life, the keypad has a lot of application like calculator,
Interfacing of keypad with 8051 microcontroller. Read More »
Relay is an electromagnetic switch, which generally use in industries and houses to control the different machine and appliances like a lamp, water pump, road light AC compressor..etc. Relay is a combination of the mechanical switch and an electromagnet, it prefers when we want to control a device or machine using the low strength signal.
Interfacing of Relay with microcontroller Read More »
In my previous article, I have discussed the LCD pins configuration and its mode. In this article, I will discuss the steps to generate own custom characters and in the last of the article write a “C” program to display a custom character on LCD. Firstly we have to know about the LCD controller (
Create LCD custom characters for 16×2 alphanumeric LCD Read More »
We can program 16*2 alphanumeric LCD in two modes 8-bit mode and 4 bit mode. In the previous article, I have already discussed the LCD and its pin configuration. See this link to know the LCD and its 8-bit mode programming. In this article, I will discuss the steps to display the message on 16*2
LCD 4 bit mode c code for 8051. Read More »
LCD use in many device to display message, like in printer, coffee machine, remote etc.There are a lot of type LCD present in market, these are may be alphanumeric, graphical or any other type. Here I will discuss about the alphanumeric LCD. Alphanumeric LCD comes in different size 8*1, 8*2, 16*1, 16*2 or 20*4 etc.
moving message display on LCD using 8051 microcontroller. Read More »
In the embedded system, bit-field is used to represent the GPIO Pins of a microcontroller or the bits of the hardware register. A bit-field is the property of the structure, it is useful to create a bitmap structure which directly maps with the bit of register. In this article, I am not describing the features
Access GPIO and Register using the Bit field Read More »
A Led blinking is a basic program. In this article, we will learn how to interface led with 8051 micro-controller. The 8051 is basic micro-controller and it’s the best for a beginner. In 8051 when we have turned the power on, all I/O pins have the high value. Means that initially all I/O pins work
Led blinking program in c for 8051. Read More »
Bitwise Operators are mainly used in low-level programming. Using the bit-wise operators we can set bit, check bit, clear or toggle the bits of an integral type. In the embedded system, a bit-wise operator performs the bit-wise operation on an individual bit of a PORT or Register. Note: Quiz on bit-wise operators. Note:
How to set, clear or toggle a single bit in C/C++? Read More »
Operators are the backbone of any programming language. So C/C++ programming language is incomplete without the operators. The C/C++ programming language support mainly three types of operators unary operators, binary operators, and ternary operator (Conditional-expression operator). Operators in C/C++ programming gives the direction to the compiler to perform the specific task. C language
Operators in C/C++ language,you must know Read More »