A keyboard is an input device as it lets you input data into a computer, it very similar to what a typewriter does however it put all that you have typed up on the monitor not on paper. There are many buttons so you ar3e able to control a lot from the keyboard sometimes can act like the mouse in some cases.
QWERTY Keyboard
A QWERTY Keyboard is the one that people generally use and the most common keyboard people come across if they use a computer. The word QWERTY are the first six letters on a QWERTY keyboard. This is where it gets its name from.
Advantages
- Common and easy to use.
- Cheap to buy.
Disadvantages
- Can break easily.
- Very hard to find wireless ones.
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DVORAK Keyboard
This keyboard were everything is in order with all the most common letters first can sometimes be referred as the simplified keyboard as the name suggests it is very basic. Today’s DVORAK keyboards consist of many more keys than the old ones due to demands as some people would like to use this style keyboard however it doesn’t have all the keys required; so new DVORAK keyboards are designed which consist of all the buttons required.
Advantages
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Comfortable and easy to use.
- They are very cheap to buy.
Disadvantages
- They are very hard to find to buy.
- They can also break very easily.
- To many keys
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Monitors- the monitor will be used so that I can view th website and what I am doing.
This is an output device which is a display tool as it allows you to view what you have done. It displays all the images produced by the computer however it doesn’t create a lasting record.
LCD Monitor
LCD stands for Liquid Crystal Display this is Monitor which is made by neutral pixels arranged in front of a light supply. It is very highly regarded due to the small amount of electricity it uses.
Advantages
- Very clear and easy to see.
- Easy to use.
- Very sturdy not easily broken
- Inexpensive.
Disadvantages
- Not always very good quality when you zoom in.
- If screen damaged the liquid crystals will not work very well.
www.lcd-monitor-reviews.com
TFT-LCD
This stands for Thin Film Transistor-Liquid Crystal Display. This is monitor which has liquid chrsytal filled between two glass plates. The amount of light needed depends on what is being projected.
Advantages
- Very slim.
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Doesn’t take up a lot of space.
Disadvantages
- Can be stolen very easily due to its small compact size.
- Can be broken or knocked over very easily
- expensive
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Printers- T he printers will be used to print of importantn information and all the documentation for the website.
This is an output device which prints onto paper whatever are you require to be outputted it produces them as hard copies. Printers are designed to produce hard copies at a very fast rate many printers are able to print at the rate of 30 hard copies in 30 minutes.
Laser Printer
This machine produces high quality text and graphics hard copies at a very rapid rate they are able to print around 12 000 hard copies in an hour. Laser printer do not use ink cartridges they use toner instead due to the size of the machine and it is designed to print many hard copies at a rapid.
Advantages
- Prints hard copies very rapidly.
- You get very good quality.
- Toner last a very long time.
Disadvantages
- Takes up a lot of space.
- Very expensive to buy.
Inkjet Printer
This printer which works by dots it drops the ink onto the sheet of paper to create a hardcopy. This printer works by propelling small ink droplets onto sheets of paper. Ink jet printers use one of these types of technology: thermal, piezoelectric, and continuous. They all produce different quality of prints.
Advantages
- Produces very good quality hard copies.
- Is very easy to use.
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Cheap
Disadvantages
- Is slow doesn’t print very quickly
- Can break very easily not a very stable machine.
- Not good for big business or large amounts of prints.
Scanners- the scanner will be used to scan images into the computer for the website
This is a machine which copies information into the computer for you to see on the Monitor. This device converts an image into a pattern of dots for the computer to understand and be able to store, it can convert images and text.
Advantages
- Very useful if you want to view your images on the Monitor.
- Cheap and easy buy.
Disadvantages
- Not always very good quality, the image is not very clear.
- Quite big can take of space.
- Can take a while to scan images or text.
Digital Camera’s- the digital camera will be used for taking pictures which will be uploaded onto the website
This is a device which captures an image of what you are looking at through a lens. A light-sensitive pickup pipe or chip to adapt visual indicator into electrical impulses.
Advantages
- You can see the picture straight away.
- You can delete and edit the picture.
- You don’t need a film you can have unlimited amounts of pictures.
Disadvantages
- Can be expensive to buy.
- Run out of battery very easily.
Graphics tablet- the graphics tabley will be used to draw images for the website
This is a piece of hardware which lets you draw things with a pen and appear on the monitor It is an input device which works just like pen and paper however your image is transferred onto the computer. There is a flat base which acts as your sheet of paper this is called the tablet it is connected to the computer so that the image that you draw appears on the screen. The pen acts as your pencil used for drawing the image you create on the tablet appears on the monitor.
Advantages
- Lets you have images how you wan them to be.
- Very good for drawing images.
Disadvantages
- Very expensive to buy and find.
- Can lose pen very easily as it is not attached by a wire.
- Can be hard to use.
- You do not always get what you want.
Speakers- the speakers will be for the sound effects used on the website
This is a piece of output device which allows you to be able to hear whatever you require to hear. It converts electrical signals into to sound signals which you hear through the speaker. Sometimes can be referred to as a loud speaker.
Advantages
- Hear sounds or anything spoken
- Cheap and easy to use.
Disadvantages
- Can break very easily.
- Not designed for long-term use.
What I will use and why
Mouse
I will use a optical mouse because a tracker ball can take some time to understand how to use were as a optical mouse is very easy to use as this is the most widely used mouse. I choose an optical mouse instead of a roller ball mouse because it can break easily due to its weak structure and the ball can get clogged up with dirt so it would not be very long lasting. This is why I have choosen to use an optical mouse.
Keyboard
I have choosen to use a QWERTY keyboard over a DVORAK keyboard for one main reason that it is much easier to use compared to a DVORAK keyboard which would take time to learn how to use. Another reason was that QWERTY keyboards are much easier to get hold of compared to DVORAK keyboards which also can be very expensive to buy.
Monitor
I will use a LCD monitor over a TFT-LCD because LCD monitors give much better quality than TFT-LCD monitors. Also a TFT-LCD is expensive so if stolen I there will be a great deal of money loss. It also can be much more easily broken compared to a LCD monitor.
Printer
I will use a laser printer instead of an inkjet printer because laser printers are capable of doing many prints at a very high quality rate. Also they are much more long lasting compared to an inkjet printer which would save me having to but a new printer every few months.
Other pieces of hardware
I will use a Digital camera instead of a graphics tablet. This is because with the graphics tablet I will only be able to draw very basic things which would be very well suited for a website. However with a camera I can capture very good quality pictures for a website which will look much more professional. I will also use a speaker for sound effects on my website as it will make the website appear more professional and an excellent feature.
Shivangee Maurya 10V ICT GCSE Full Coursework 14/09/07
What I will use for the Hardware sub system