1.2 Output devices
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This document discusses different types of output devices for computers including printers and speakers. It describes plotters, laser printers, inkjet printers, and dot matrix printers, providing their uses, advantages, and disadvantages. Plotters are used where low noise is essential and for fast, high-quality, high-volume output. Laser printers provide fast output but are limited in paper size, while inkjet printers produce high quality output but are slower and have higher running costs than laser printers. Dot matrix printers can work in noisy environments but are slow and noisy. Speakers are used to play audio files and music from multimedia, websites, CDs, and DVDs.
1.2 Output devices
- 1. 1.2 Output Devices These are devices that are used to obtain output from the computer.
- 2. Types Flatbed Drum Uses 1. used to produce printout of graphs 2. sometimes used to produce billboards and signs Advantages Disadvantages extremely large printouts can be produced they are very slow to produce outputs. the graphic output is of very high quality filled areas of colors are difficult to produce using pen plotters they are very expensive 2. Plotters
- 3. Uses 1. used in applications where low noise is essential. 2. Essential in applications which require fast, high-quality, high- volume output, for example in most offices and school. 3. Laser Printers
- 4. Advantages Disadvantages • Fast output is achieved. • Limited in the paper size that they can take. • Running costs are cheaper than inkjet printers. • Large printout jobs can be carried out quickly. • Initial costs are high as they are expensive. • Quality of printing tends to be higher than other printers. • First page can be slow to print. • Toner cartridges last much longer than inkjet cartridges.
- 5. 4. Inkjet Printers Uses 1. used where there are low output volumes. 2. Very good when applications require very high-quality output and where speed is not an issue. 3. Inkjet printers are being developed that will create three-dimensional models.
- 6. Advantages Disadvantages • Produce high quality output. • Slow to print more than one page. • Fast for printing one-page documents. • Cheaper to buy than other printers. • More expensive to run because inkjet cartridges don’t last as longer as toner cartridges. • Easier to move than other printers. • First page can be slow to print.
- 7. 5. Dot Matrix Printers Uses 1. can work in environments which would cause problems for laser and inkjet printers. 2. used in noisy environment such as garages and car servicing, car sales and car repair services. Advantages Disadvantages • dirty and noisy environments do not affect the printer • are very noisy and so unsuitable for most office environment.• produces carbon copies • running costs are low • are now more expensive than inkjet printers. • continuous print jobs using pre-printed stationary are more easily managed • are most slowest type of printers.
- 8. 6. Speakers Uses 1. speakers are required to play sound files attached to multimedia presentations and websites 2. computers and MP3 players use speakers to play music from CDs and DVDs 3. speakers are integral part of home entertainment systems