In this article, I am describing some issues which make your PC slow and also describing the advantages of virtual memory. But before explaining the advantage of virtual memory first let understand what is virtual memory and why it is required. It is very important to understand the concept of memory management although Memory management
Advantage of virtual memory in operating system Read More »
An enum in C is a user-defined data type and it consists set of named constant integer. Using the enum keyword, we can declare an enumeration type with using the enumeration tag (optional) and a list of named integer. Basically, we used the enum to increase the code readability and with enum easy to debug
enum in c, seven important points you should know Read More »
Generally, people who work on high-level language do not take an interest in the details of the computer and their architecture. They ignore the concept of endianness and also never think about how to convert little endian to big endian and what is the difference between little endian big endian (little endian vs big endian).
Little endian and Big endian Concept with programming Examples. Read More »
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 form the foundation of any embedded system. In fact, it is almost impossible to imagine an embedded device without them. Among all I/O devices, the LED and switch are the most fundamental and widely used. LEDs serve as visual indicators (outputs), while switches act as basic input mechanisms. If you have
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 »