A prime number is a positive natural number, whose value greater than 1 and it has only two factors 1 and the number itself. Either you can say that prime numbers only divided by itself and 1. Any positive natural number who is not a prime number is called a composite number. For example, 2,3,5,7,11.. In […]
How to find whether a given number is prime number? Read More »
The volatile keyword is a qualifier it has a lot of importance in the programming language but problem is that many programmers are not aware of how to use the volatile keyword and when need to qualify a variable from the volatile keyword. Most of the textbooks don’t give importance to this topic either and
volatile keyword in C ( or volatile qualifier in C) Read More »
Factorial is used in many areas of mathematics but mainly used in permutation and combination. Factorial is the product of the all positive number from 1 to n (user entered number). In simple words, we can say that factorial of n would be 1*2*3*…..*n. Note: There is no factorial exist for the negative number and
5 ways to find factorial of number in c programming Read More »
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 »