Introduction: There are four types of Hardware, input devices, output devices, storage devices and CPU. I will be describing and reporting about these three hardware items: monitor, mouse and Hard disks. There are many computer components like Power Supply, Mother board(which contains the drive controllers, memory and the microprocessor)CD ROMs drives, hard disk drives and the main ones that we are able to see clearly are mouse, keyboard and the monitor. I will be discussing to you three main hard ware components-the monitor, printer and Hard disks. I will be comparing the different types of the components. Monitors:
A monitor is a screen where the information is displayed, like pictures and texts (if you are typing a letter or an essay you would be able to see what you are typing without a monitor, you can’t do much. So the monitor is quiet important. There are different types of monitors CRT Monitor (the big bulky ones) which stands for Cathode-ray tubes and LCD Monitor (the flat panels) which stands for liquid crystal display . There are advantages and disadvantages for both types of the monitors. The appearances of those types of the monitors are different but the inner software used for both of the monitors is the same.
Each type of monitor has its advantages and disadvantages. In this work I will provide a comparison of CRT and LCD monitors, along with some of the specifications. The monitor displays the output of the video card, showing you the results of calculations that the PC has made. Using either a conventional cathode ray tube (CRT) similar to that used by a television set, or a liquid crystal display (LCD) such as those used on notebook PCs, dots called pixels are set to different colours and brightness levels to display text and graphics. LCDS’ The LCD which is the newer version of the monitors has advantages and disadvantages.
One of the advantages is that it is smaller and flat so you can fit it on to your desktop and easier to carry for any circumstances. Also they look better and keep your desktop nice and clean. This type of monitor is much easier to carry (lighter) it will give you enough space on your desktop to work and also makes your place look quiet neat and tidy. These types of monitors are about the same price as the CRTs, so they are actually quiet cheap. Also the LCDs require less power, Power consumption varies greatly with different technologies.
CRT displays are somewhat power-hungry, at about 100 watts for a typical 19-inch display. The average is about 45 watts for a 19-inch LCD display. LCDs also produce less heat. But sadly there are disadvantages too, they don’t have a perfect view angle which means if you are sitting at an odd angle to the monitor the colour will be affected and the picture may literally disappear or not be clear. Another one is the quality or those monitor doesn’t last as long as the CRTs. The LCDs can change their pivot, horizontal (landscape) or vertical (portrait).
This is very useful for web surfing, viewing large spreadsheets and desktop publishing. The Price for a LCD is about i?? 130 Maximum which is quiet cheap as it only is published for a year. CRTs’ When profiling a CRT monitor, you usually have access to an On Screen Menu on your monitor which allows you to change various aspects of the monitor’s performance, including contrast and brightness. Many LCD monitors don’t have this facility. Another advantage is that the contrast ratios and depths of colours displayed are much greater with CRT monitors than LCDs .
Also even though the monitor is bigger than a LCD the Colour Clarity and Depth is more valuable than a LCD. The CRTs are cheaper too, than LCDs so it would be quiet cheap to buy the CRTs. There are disadvantages for the these Monitors too, the CRTs are the old versions of monitors which means they were invented in about 1960s. So they will not suit our modern lives that much. The CRT is really big and bulky which means if you live in a small house or have little space for your workplace the CRT will not fit. The Price of a CRT is about i?? 50-60 which has decreased over the last 20 years as the LCD has come out and taken over.
Overall the Monitor is efficient because without it you will not be able to see what is going on and nothing would work, because you will not see where the tool bars and other menus are. The Monitor works as little dots which are really tiny change colour to let us see the graphics which I on the Monitor and the written text. Out of the LCD and CRT I would buy LCDs’ because they are better in appearance but the CRTs are good quality. The monitors use DB9 9 connectors to connect to the Motherboard. DB9 9 pins in two rows, used on older monitors, and VGA’s. PS/2 style Serial ports also use DB9 connectors. Printers:
Printers transform Graphics and texts from your PC into hard-copy output on paper. Printers are around since the first PCs were invented. They have got a variety of purposes like from letters and Business documents, to the printing of flyers and sales material, to producing photographs. There are different types of Printers: o Dot Matrix: The oldest kind of printer is which was used on PCs in the 1980s. This kind of printer uses an array of pins and a ribbon to print text, and in some cases, graphics. Noisy, slow and low in quality, these have been almost entirely pushed out of the market by inkjet and laser printers.
They are still sold for special needs; especially for printing multi-part continuous forms for business purposes (lasers and inkjets can’t print through multiple-sheet carbon forms). o Laser: These printers use technology similar to that of a photocopier to create high-quality printout at high speed. They are expensive, however, and they are generally limited to black and white output unless you want to spend a lot of money on a color laser printer. o Ink Jet: The most popular type of printer sold today, ink jet printers use a special print head that ejects microscopic dots of colored ink onto paper to create an output image.
They are relatively inexpensive to buy and almost all will print in color. However, they can be expensive to operate if you do a lot of printing, can be slow, and their output is prone to fading and smudging. Quality also varies widely. o Color Laser: These produce amazing output and are fast, but very expensive. They are still not an option for most PC buyers. There are many reasons to have a printer, it lets you print out documents and Letters which are sources of advertisement and Business. It also has great use for Students and working people who could rather type out their work than write it by hand.