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  • Level: GCSE
  • Subject: ICT
  • Word count: 2884

ITC - What it is, and its uses.

Extracts from this document...

Introduction

AO1 Hardware The hardware that is standard with most computer systems is: * A mouse * A keyboard * A monitor (screen) * A printer * And a computer system itself including, usually, a floppy disk drive and a CD-ROM drive. Other drives can be added. The two types of hardware are "input" and "output" devices. Input devices are devices that are used to input data into the computer, examples are keyboards, mouse and CD-ROM drives. Output devices are devices that send data out of the computer, examples are monitors and printers. Floppy disk drives can be used as input and output devices. Keyboard The most widely used keyboard is the "standard keyboard". It us just a normal sized keyboard with all the normal functions. Problems with the standard keyboard are that if someone is typing on them for a long time it can cause discomfort and also permanent injury. Other types of keyboard are the "ergonomic keyboards" and "concept keyboard". Ergonomic keyboards are easier to use and let the wrist relax in a more natural position therefore reducing injury, and the concept keyboard is a keyboard which is covered in flexible plastic so it can be cleaned easily if it gets dirty. Mouse All mice look very similar. A standard mouse has a ball underneath and the whole thing is moved around, moving the ball underneath which moves a cursor on the screen. Another type of mouse is the tracker ball, which has the ball on top of the mouse and you use by moving the ball with a single finger. These types of mouse are easier to draw with and are more comfortable to use. ...read more.

Middle

They can print on continuous stationery or multi-part stationery (e.g. copies of invoices). The disadvantages are that they have a very low resolution so print quality is poor. They are also very slow and noisy and sometimes can only print less than 100 characters per minute. The advantages of the Ink-Jet printers are that they have a high resolution so print quality is good (about 300-600 dots per inch). They are also pretty cheap and are small so are ideal for home use. The disadvantages are that they can sometimes be quite slow when printing colour documents such as photos. They are also expensive to run; the cartridges usually cost between �20-30. Monitors, also called visual display units (VDU) are the most commonly used output device because a computer cannot be used without it. They're used when visual information is needed but it is not a permanent record of what is on the screen. There are two ways that monitors are different from each other: * Resolution: Resolution is measured by the number of pixels or dots that make up the image on the screen. The main sizes are high (1024x768), medium (800x600) and low (640x480). * Size: The size of a computer monitor is measured in inches across the screen, diagonally. Most PC monitors have a size of 17 inches, this may differ. The two main types of monitor are LCDs and CRTs (Cathode ray tubes). There are also other types of outputs, for example, a graph plotter. A graph plotter is a printer used for precision drawings such as architect's plans. The most common graph plotter is a flat bed plotter. ...read more.

Conclusion

The person who makes the wage slip would also have to know how to mail merge information and send it to the printer to print it off. ICT will make the work for the staff a lot easier, because if things like wage slips had to be edited then it could be changed easily. If it was all written by hand then it would take an awful lot longer, because the wages would have to be worked out, then each one would have to be written one by one. If mistakes were made while writing the wage slips then it would all have to be written again and would waste a lot of time. When making leaflets and letters to advertise the cinema then it could all be made and edited easily using ICT. If making leaflets for the cinema then things would obviously change every now and then, so this could all be easily done on the computer, instead of creating whole new leaflets. Graphics and patterns etc could be added to leaflets and letters to make them better, which could not be done without ICT. To advertise without using ICT would take a lot more time and effort and would probably be more expensive. The cinema would have to revert back to using advertisements in papers, on billboards and on the radio. To advertise in papers and on the radio is quite expensive and will not be seen or heard by everyone all the time. But, if a website was created, it would be there 24 hours a day and almost anyone who wanted to would be able to look at it. Websites are a lot cheaper and more effective than advertising in newspapers and on the radio etc. ...read more.

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