All of us are mostly has a printer in home. printers are very important to us to print our task, our important document or maybe our photos. But did you know the printer are has many kind of technologies. In this world, there are 2 major kind of printer, the impact printer and the non impact printer. but, did you know what is difference about this kind of printer??? Now I will explain you about that difference....
The impact printer is a printer which have a mechanism that touches the paper in order to create an image. There are two technologies about the impact printer, are the dot printer and the character printer.
The Non-Impact printer is a printer which have a mechanism that do not touch the paper when creating an image.There are many kind of technologies for the Non-Impact mechanism. there are inkjet printer, laser printer, solid ink printer, dye-sublimation printer, thermal wax printer, and much more.
Inkjet printer are mostly used in our home or in a office. It is the most popular printer in the world. because this kind of printer are very cheap and it have a good performance. But this kind of printer are easily broken if we never use it. it seems the ink on that cartridge can dry.
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| Impact Printer |
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| Non-Impact Printer |
But the most incredible technologies in printer mechanism are the laser printer. but this laser printer are very expensive. Maybe next ten or twenty years people will prefer use this kind of technologies than the inkjet technologies.
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| Random Access Memory |
The RAM is made of millions transistors and capacitors. These parts are paired and make one bit of data information. The data information is 1 or 0 (binary data). The transistors work like a switch to control how the circuits work. And the capacitors are the storage of the binary data.
Thinks that capacitors are a leaky bucket and the transistors are the tap. The transistor gives water to the capacitors. The bucket will not full because there is a hole in the bottom of the bucket. It is same with the RAM works. The transistors are process the binary data and store it to the capacitors and the capacitors will refresh a thousand times per second. So it will not full even we do a lot of task because the capacitors will refresh anytime.
RAM has many types. Some of them are DRAM or Dynamic RAM, FPM RAM or Fast Page-Mode RAM, EDO RAM or Extended-Data-Out RAM, SD RAM or synchronous Dynamic RAM, SRAM or Static RAM and much more. The sizes of ram are very various. Start from 16 MB and up to 8 GB. The price of the RAM are depends of the type of the RAM and the size of the RAM.
A graphics card, or graphics adapter is a one of the important hardware in computer system. It can generates the image. But.. did you know how did the graphics card works????
We know that The images you see on your monitor are made of tiny dots called pixels. The monitor displays over a million pixels, it depends on the resolution of the monitor. Usually the resolutions of monitor are 800 X 600 pixels. It means there are 800 column of pixels and 600 rows of pixels. So, on resolution 800 X 600 pixels, there are 480000 pixels.
To do this, it needs a graphics card to translate binary data for each pixels and turn it into color and all of the color build image to the monitor.
The CPU, working with software , sends information about the image to the graphics card. The information are the binaries data. With that data, The graphics card decides how to use the pixels on the screen to create the image. Translate into color for each dots or pixels. Then, it sends that information to the monitor through a cable. ¬For videos or games, the computer has to go through this process about sixty times per second.
The latest graphics card from nvidia is geforce gtx 590 series and from ati radeon is ATI Radeon™ HD 6670




