Category: IT BLOG

Today’s era is considered to be as new world era. In the modern world, communication technology is rapidly growing. And of course the computer is the main communication machine used. Since the time computer has been make-believe scientists and engineers have been trying making it more and more compact. Some of the results we have found in the form of Mobiles I-pods and I-phones have replaced the laptops or desktops to an extent. But the scientist is now making an effort on making it more compact even than mobile. There are computers in the shape of different pens each having a function of its own and when combined together give us the usage of a full-blown computer. It is a computer broken down apart into pieces, each the size of a pen. The screen and keyboard are projected onto surfaces.
Components: Following are the components of 5 pen technology-
Virtual Keyboard:
The Virtual Laser Keyboard (VKB) is the new widget for PC users. The VKB emits laser on to the desk where it looks like the keyboard having QWERTY arrangement of keys i.e., it uses a laser beam to generate a full-size perfectly operating laser keyboard that easily connects to of PC and Most of the handheld devices including PDA’s or tablet PC’s.
Battery:
It is an vital component in the moveable type of computer. Ideal batteries must be small in size and work for longer time. It comes with a battery life of 6+. If we talk about its usage, it can be used for 2 weeks.
Advantage of this 5 pen PC technology:
• It is Portable i.e can be carried
• It is Feasible
• Ultimate ever-present
• Support WiFi technology
• Pens produce both the monitor as well as the keyboard on any flat surfaces from where you can carry out functions.
Disadvantages:
• Positioning is more important to use it to up to the optimum level.
• Keyboard concept is not new.
• It is currently unclear

The arrangement of a simple random scan system is shown in the following figure. System stores and application program in the system memory along with a graphics package. With the help of graphics package the Graphics command in the application program are converted into a display file stored in the system memory. And this file helps the system to refresh the screen. When operated as a random-scan display unit, a CRT has the electron beam directed only to the parts of the screen where a picture is to be drawn. Random-scan monitor draw a picture one line at a time and for this reason are also referred to as vector displays (or stroke-writing of calligraphic displays).

The component lines of a picture can be drawn and refreshed by a random-scan system in any specified order Fig. a pen plotter in a similar way and is an example of a random-scan, hard-copy device.

Refresh rate on a random-scan system depends on the number of lines to be displayed. Picture definition is now stored as a set of line-drawing commands in an area of memory referred to as the refresh display file. Sometimes the refresh display file is called the display list, display program,