November 2011 ~ Computer tricks and Pranks

Printer

Printer is an output device. The most common method of producing human readable out put is using printers. Printed output is usually referred to as hard copy. Printers provide information in a permanent readable form. They produce printed output of results, programs and data. Printers are classified as follows: 1. Character printers – They prints one character of the text at a time. 2. Line printers - They prints one line of the text at a time. 3. Page printers - They prints one page of the text at a time. Above...

Operating Environment

i. Operating or Target Environment: The hardware that supports a language has a great impact on language design. Languages, as a mean to solve a problem, are part of the overall technology that is employed. The external environment supporting the execution of a program is termed its operating or target environment. In computing, an operating environment is an environment in which users run application software, whether by a command-line interface or a graphical user interface. An operating environment is usually not a full...

Difference between Magnetic and Optical Storage

Magnetic Storage a) Stores data in magnetic form. b) It is affected by magnetic field. c) It has high storage capacity. e) It doesn't use laser to read/write data. f) Magnetic storage devices are ; Hard disk , Floppy disk, Magnetic tape etc. Optical Storage a) Stores data optically & used laser to read/write. b) It is not affected by magnetic field. c) It has less storage than hard disk. e) Data accessing is high as compared to floppy. f) Optical storage devices are; CD-ROM,CD-R,CD-RW, DVD et...

Difference between LCD, LED, CRT

LCD a) LCD stands for Liquid Crystal Display which is a thin, flat display screen made up of any number of color or monochrome pixels arrayed in front of a light source or reflector. b) It is often used in electronic Devices because it uses very small amounts of electric power. LED a) LED stands for Light Emitting Diode which is a semiconductor diode that emits incoherent narrow- spectrum light when electrically biased in the forward direction of the p-n junction. This effect is a form of electroluminescence. b) It...

Impact of computer on society

Everyone knows that this is the age of computer and vast majority of people are using computer. Development of science and technology has direct effect on our daily life as well as in our social life. Computer technology has made communication possible from one part of the world to the other in seconds. They can see the transactions in one part of the world while staying in the other part. Computer development is one of the greatest scientific achievements of the 20 th century. Computers are used in various fields as well as...

History of Computer in Nepal

There is not a long history of computers in Nepal. Nepal hired some types of calculators and computers for it's census calculation. Following list shows it's history in Nepal.• In 2018 BS an electronic calculator called "Facit" was used for census.• In 2028 BS census IBM 1401 a second generation mainframe computer was used.• In 2031 BS a center for Electronic Data Processing ,Later renamed to National Computer Center(NCC),was established for national data processing and computer training.• In 2038 BS ICL 2950/10 a second generation...