Karteikarten
Computer Hardware
Karten in diesem Stapel (12)
- 1Microphone-Accept sound input or human voice into a computer system. Converts sound to text or accepts spoken commands.
- It is faster to use this rather than a keyboard and is hands free, ideal for multitasking
- Regonition rate of spoken words can be low and requires large storage. - 2Mouse- When moved, the pointer on the VDU follow. The mouse controls the pointer.
- Easy to use and quicker to select menus icons compared to a keyboard
-It needs a flat space to work and it is often quicker to use keyboard shortcuts. - 3Graphics Digitiser-Allows a user to hand-draw images and consists of a stylus and flat surface.
-It is easier to draw with a stylus compared to a mouse and is more accurate.
-It is very expensive and is not suitable for selcting icons or menus. - 4TouchscreenA touch sensitive surface, when touched it causes a change in voltage which can determine the co-oridante of the touch.
-Little ict skills are necessary and selecting things are quicker than with a keyboard.
-Limited number of space and they become dirty quickly. - 5SpeakerComputers often have a small internal speaker and a external speaker helps improve the quality.
-Useful for blind and natural way to communicate with users.
-External speakers require space and can distract others. - 6Laser PrinterProduces 40 pages per minute, a laser beam scan and reproduces a image onto paper.
-Faster to print in bulk and produces high quality output
- They are expensive and multipart stationary can't be used. - 73D PrinterMainly used to create prototypes and can print a variety of objects such as ceramic.
-It is faster than conventional methods and cost of producing is cheaper.
-Limited as can only print prototypes and isnt economical for large scale manufacturing. - 8Hard disk driveA number of rigid discs stacked on a spindle where data is stored, inside a enclosed unit to protect it.
-Cost per gB is cheaper and large storage capacity.
-Prone to breaking and slow access speeds. - 9HD STORAGE MEDIA-Uses laser tec to store and retrieve data at high transfer speed to and from the optical discs.
-They have larger disk capacities then DVDS.
-uses a blue laser to increase the density and therefore the storage capacity. - 10Solid Storage Devices-Does not contain moving parts.
-Referred to as flash memory and are non volatile because they can retain information with no power.
-Most obvious example is of a USB. - 11Memory Cards-Electronic flash memory storage devices used in a range of devices like phones.
-A SIM card is an example of this and are used to store additional memory. - 12Smart Cards-Seen in bank cards like chip and pin.
-contain a small embedded intergrated circuit(IC)
-Allows data to be written to and read from the card.
Informationen
- Beschreibung
- Digital Technology (Core Course) Karteikarten am Computer Hardware, erstellt von Ellen MUR am 24/10/2018.
- Erstellt von
- Ellen MUR
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