The input devices are used for supplying program and data to the memory. In other words, the computer system reads the program and the data from the input devices. Most common input devices are the keyboard and mouse.Following are some of the important input devices which are used in a computer −KeyboardMouseJoy StickLight penTrack BallScannerGraphic TabletMicrophoneMagnetic Ink Card Reader(MICR)Optical Character Reader(OCR)Bar Code ReaderOptical Mark Reader(OMR)KeyboardThe keyboard is the most common and very popular input device which helps to input data to the computer. The layout of the keyboard is like that of the traditional typewriter, although there are some additional ... Read More

There are different points of view offered by different folks about the origin of the idea of having mirrors inside elevators but on one thing they all have the same view - psychological and ergonomic factors rather than technological factors brought mirrors into elevators. One line of opinion says this business of mirrors in elevators first began in Japan where it helped to resolve an ergonomic problem for people in wheelchairs. As the elevators in those pre-World War II days were really small, it was pointed out that mirrors in these elevators helped the folks in wheelchairs to clearly see ... Read More

Mobiles have become a prerequisite in our day-to-day lives. They have helped in creating a global village in a true spirit. Technology has truly enhanced our standard of living. Living without our mobiles is not possible in any ways today considering their contribution to our lives. This can be understood in the following points -Staying Connected with the PeopleOne of the biggest support that is provided by mobiles is betterment and advancement in communication and networking with the people. It has helped reduce physical distance with the video calling facility. People today can get in touch with people within seconds ... Read More

LEDs (Light emitting diodes) are very widely used in today's electronics equipment and they are ruling the world's display technologies today. LED's are used for much electronic equipment. Mostly they are used as panel indicators on televisions, radios and other domestic electronic and industrial equipment. There are different types of LEDs.Traditional inorganic LEDs − These are used for small LED lamps, panel indicators etc.,High brightness LEDs − These are used for domestic lighting.Organic LEDs − Organic LEDs uses organic materials and are replacing the traditional types of LEDs with increased efficiency.

You have an assignment due and just sat down to finish it off quickly, but your slow laptop or PC is creating a trouble for you and the worst part is, you have no clue how to deal with this sluggish piece. No big deal if many users go the verge of even replacing their laptop and PC. Hey, wait! You simply don’t have to. You can give your device a speedy boost easily by making some tweaks here and there, know how?Go to Control PanelSimply open the control panel and remove all the old software, programs, heavy games and ... Read More

The use of elevators at present era is quite common whether at apartments, offices, hotels and other multistory structures. However, we all are aware that technology comes with its curses as well and elevators are no exceptions. Elevators, especially in office buildings, too have all the minor-major issues every now and then, and cause inconvenience to us. Let's find out why such inconvenience is attached with elevators?Here are a few common troubles occurred with elevatorsIssues with Sheave RegroovingOld and crock sheaves put extra wear on ropes and this results in boosting the level of wear on sheaves. Eventually, both the ... Read More