computer

2010-08-23T05:48:00.001-07:00

Windows is one of the popular operating system software for PC (personal computer). It is developed by Microsoft Corporation, USA. It is GUI (graphical User Interface) based operating system. It performs the two most important functions:

• It acts as a link between you and your computer system.

• It makes the computer hardware active and manages overall activities of the computer

When you switch on the power supply of your computer, the windows operating system starts getting loaded. The first thing that you see is the Desktop. It is your overall work area while you are in the windows. The windows desktop has various components:

computer

2010-08-23T05:47:00.001-07:00

An operating system is a collection of programs which acts as interface between compute hardware and the user, and controls the execution of all types of programs. The major functions of the operating system are:

• It controls and co-ordinates the various resources of a computer, such as memory, secondary storage, input and output devices, etc.

• It permits the user to create, print, copy, delete, read and write the files.

• It co-ordinates between the software and hardware.

Several operating systems have been developed over the years. Some of the Important operating systems are MS-DOS (Microsoft Disk Operating System) Windows XP, windows vista, Mac OS, Linux, Unix, etc

computer

2010-08-23T05:46:00.001-07:00

Application software is a set of one or more programs, designed to solve a specific problem, or to do a specific task. For example, application software for payroll processing produces pay slips as the major output, and application software for processing examination results produces mark sheets. Similarly, program written by a scientist to solve his/her particular research problem is also known application software. The programs included in and application software package are called application programs.

There is a large number of application software available for a wide range of applications, ranging from simple to complex. Some of the most commonly known application software is word-processing packages, spreadsheet software, database software, graphics software, educational software and entertainment software. There are two types of application software. They are packaged software and tailored software.

computer

2010-08-23T05:45:00.000-07:00

Computer is a system, where the CPU and other peripheral devices are connected with other. All peripheral devices such as keyboard, monitor, in this chapter we will learn about the following hardware.

a. Input hardware

b. Output hardware

c. Storage hardware

An input device is an electromechanical device which accepts data and instructions into a suitable binary form which can be accepted by the computer. Several input devices are available nowadays which are used to communicate with the computer. Keyboard is a common input device. Other input devices except the keyboard are called alternate input devices.

2010-08-23T05:44:00.001-07:00

A system is a group of integrated parts which has the common purpose of achieving some objectives. Since a computer is made up of integrated components that work together to perform the operation, a computer is also called a system. The input or output units cannot function until they receive signals from the CPU cannot perform any task alone. System operation of a computer includes inputs, process, control, store and output,

Input The process of entering data and instructions into a computer system is known as input. Input is performed by using the input devices.

Process Performing a systematic process upon the data according to the given instructions to get the desired result is called processing. This is performed by the CPU.

Output The result after the processing of the data provided to the user is called output. Output is provided by the output devices.

Storing Saving of the data and instructions for the further use is called storing. Storage devices are used for this purpose.

Controlling Controlling is the process to control and perform systematic operation for input, process, output and storing operations.

computer

2010-08-23T05:43:00.001-07:00

Computer has made a great impact on our everyday life. If has changed our life style. Applications of computer today range from a simple video game to medical diagnosis, TV programs weather forecasting and launching of satellites and so on. Its presence is felt in almost every walk of life. Computer is one of the fastest machines created by human which has made our life easy.

The history of computers started when the heed of counting came into existence. The prehistoric men followed various manual techniques to overcome their needs for counting. They used pebbles and bones of dead animals for counting objects and animals. Later on it was replaced by sticks and then by fingers. As the need to do large calculations grew, people attempted to develop to make counting simple. This was followed by electronic devices and now we have a very sophisticated electronic device known as computer to do larger and complex calculations. Let us now study some important developments of the invention of modern computers.

computer

2010-08-23T05:42:00.002-07:00

The computer plays an important role in the entertainment industry. It helps in the entire movie making and the advertisements. The dinosaurs that we saw in ‘Jurassic’ park’ were graphics that were designed on computers. The cartoons also are drawn in with the help of computers. The books that we read are also written and designed in a computer.
The uses of the computer are numerous. Nowadays, we cannot do many important day-to-day tasks without the help of computer. Maybe, in fifty years time, the computer will have taken over most of our daily tasks and then perhaps, we will have more time for other things.

computer

2010-08-23T05:42:00.000-07:00

The computer has become the most important aspect of science and technology today. It helps in complex operations, it can find and identify the viruses, and it can also take video photos of the inside of a human body, including fetuses. It can keep a dying person alive for any amount of time in a life supporting system. Scientists can test new medicines on a computer to find out if it will work on humans.
The computer does all the space research of sending spacecrafts to the moon and other planets. The missiles and the planes fly due to its computer guidance systems. The computer tells the pilot of he is flying too low or tells him if some part of the plane is not functioning. If a pilot switches the plane to autopilot, the computer flies the plane and the pilot can rest or have his meal.

computer

2010-08-23T05:40:00.000-07:00

Among all the scientific invention, the most important till date is undoubtedly the computer. It is capable of doing things that are simply awesome. It is an electronic data processing device which accepts data through input device and gives output through output device. A computer can do lots of work. It can search through millions of information in a few seconds. For example, if the police want to watch a fingerprint, they just have to ask to the computer to find match and the computer will search trough its database, which can contain millions of prints to find the correct match. Writing, drawing and designing are some of the things that a computer is capable of.

The computer has become the most important aspect of science and technology today. It helps in complex operations, it can find and identify the viruses, and it can also take video photos of the inside human bodies, including fetuses. It can keep dying person alive for any amount of time in a life supporting system. Scientists can test new medicines on a computer to find out if will work on humans.