A microcomputer can be defined as a small sized, inexpensive, and limited capability computer. It has the same architectural block structure that is present in a computer. Present-day microcomputers are having smaller sizes. Nowadays, they are of the size of a notebook. But in coming days also their sizes will get more reduced as well. Due to their lower costs, individuals can possess them as their personal computers. Because of mass production they are becoming still cheaper. Initially in the earlier days they were not very much powerful. Their internal operations and instructions were very much limited and restricted. But ... Read More

CPU and the main memory are having speed faster compared to the electromechanical input or output devices like printers, mouse etc. In such a case it is essential that the data lines of the computer should not kept engaged for a long time during communication with input/output (I/O) devices. Otherwise as an effect, the overall speed of the computer system comes down drastically. So I/O devices are connected to a computer through I/O ports.For example, to get a document printed by the printer, phase wise printer will get required information from the CPU to carry out the printing process. After ... Read More

During the execution of a program, the control unit fetches one instruction at a time from the main memory and then executes it. In this execution process, it takes help of ALU, if the instruction execution involves arithmetic or logical operation (like AND, OR, Ex-OR). After execution of the current instruction, the CPU fetches the next instruction for execution. This process continues until the program is completed and the result is output using the output device. In many computers, the control unit and the ALU are integrated into a single block, known as Central Processing Unit (CPU).Central Processing Unit (CPU) consists ... Read More

Inside a computer, there is an Arithmetic Logic Unit (ALU), which is capable of performing logical operations (e.g. AND, OR, Ex-OR, Invert etc.) in addition to the arithmetic operations (e.g. Addition, Subtraction etc.). The control unit supplies the data required by the ALU from memory, or from input devices, and directs the ALU to perform a specific operation based on the instruction fetched from the memory. ALU is the “calculator” portion of the computer.An arithmetic logic unit(ALU) is a major component of the central processing unit of the a computer system. It does all processes related to arithmetic and logic ... Read More

Although it is based on C++, Java is more of a “pure” object-oriented language. In Java, everything extends into an Object class. It means the coding is mostly wrapped in Java objects. The Java language assumes that you want to do only object-oriented programming.You cannot code anything in Java without declaring classes and objects.For example, if you have to say a small sentence "Hello World", it should be declared as a class:class HelloWorldApp {    public static void main(String[] args) {       System.out.println("Hello World!"); // Display the string.    } }Because more than 90% of coding involves objects, ... Read More

Did you notice small bumps on the F and J keys on a computer keyboard?? Wonder why they are a part of keyboard design.Actually, the small bumps or ridges found on the F and J keys on a computer keyboard are to help the users to correctly position their left and right hands without having to look at the keyboard. The middle row is called the home row key position. Once you place your left and right index fingers on the F and J keys, accessing the remaining keyboard becomes easy.

UNIX copyrighted Operating system which is used by IBM AIX, Sun Solaris and HP-UX etc., Most of the UNIX systems are commercial in nature.Linux is considered as UNIX clone. But the traditional companies won't accept "Unix-like" but want the Unix trademark. Linux Is Just a Kernel and not the complete Operating system.When it comes to administration, Linux is considered as most user-friendly operating systems. Unix and Linux use a different set of tools for back up of data. However, they both share some common tools such as tar, dump/restore, and cpio etc.

There are many openings for CSE and IT engineering graduates in the Indian Government sector. Here is the list of Major IT Organizations in Government of India which have openings every year for fresh engineering graduates.Centre for Development of Advanced Computing (CDAC), ONGC(Oil and Natural Gas Corporation)GAIL(Gas Authority India Ltd )National Informatics Centre (NIC)HAL (Hindustan Aeronautics LimitedEducation and Research Network (ERNET India)Software Technology Parks of India (STPI)SAIL(Steel Authority of India)DRDO (Defence Research and Development Organization)MECON limitedBARC - Bhabha Atomic Research Centre ( BARC )MECL - Mineral Exploration Corporation LimitedECIL - Electronics Corporation of India LimitedFCI - Food Corporation of IndiaCDAC ... Read More

It won't be surprising for you to hear that mobile phone usage has been increasing day by day. With the launch of modern smartphones hitting the market, much of the population now expect to be able to do many everyday tasks through their mobile phones. As more and more people are using mobile phones over desktop it is clear that the mobile phone is taking over desktops for internet surfing.The fundamental thing for a website is that it should be mobile friendly; it should be designed in such a way that it is equally compatible with mobile phones as well ... Read More

A procedure should be followed for encrypting an MS word document. Encryption is nothing but protecting your document from a third party. First, let us look into the definition of encryption.What is Encryption? How do we use Encryption?The word encryption is derived from the Greek word Kryptos means hidden or a secret.There are certain algorithms to use encryption like RSA algorithms and Diffie-Hellman key exchange algorithms.These algorithms led to the use of encryption in commercial and consumer realms to protect data.The password is the best example of encryption.Encryption is used in sending data across all the networks and ATM is ... Read More