Many times I have read about the most confusing topic structure padding in C and memory alignment in C. Understanding of memory alignment is very important for a software engineer who works on the memory. Sometimes if we don’t care about memory alignment then it may cause a serious issue. I have read a lot […]
Understanding of structure padding in C with alignment Read More »
Input and output devices are the important components of embedded system, we cannot imagine any embedded device without the input and output device, switch and led are the basic example of input and output device, so it is very important to understand the interfacing of the switch and led. Here we learn how to control
Interfacing of switch and led using the 8051 Read More »
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 »