Term
| what is a computer system |
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Definition
A computer system operates with hardware and software to create a working solution to something.
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Term
what is a data bus
describe the data bus's with a modern processor |
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Definition
Is a series of wires which connects the processor the the main memory (RAM) or cache memory.
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A modern processor uses a 64 bit wide data bus to connect between the main memory and processor |
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Term
what is an address bus
What defines the amount of physical memory that can be addressed by the processor |
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Definition
where the address of the data (which isnt the actual data) is "communicated" to the main memory.
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the width of the address bus (the number of wires in the bus) |
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Term
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Definition
| connecting the hardware to the computer. Internal ports connect things such as cd drive. External port connects things such as mouse and printer. |
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Term
| What does HDMI stand for and what does it do |
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Definition
A high definition multimedia interface
used to transfer audio and visual data to computer monitors digital televisions or video projectors |
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Term
| what does (DVI) stand for and what does is do |
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Definition
is used to connect a video source to a computer monitor
Digital video interface |
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Term
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Definition
| a 6 pin connector that iwas used to connect mice and keyboards to computers. Now usb do this |
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Term
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Definition
| High speed connectivity between keyboards and mice and other peripherals to the computer |
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Term
| what does the ethernet do |
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Definition
| mainly used for networking and internet connectivity |
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Term
| What is Barcode Recognition |
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Definition
| A bar code represents a code number for the product it is on. The bars are different thickness so they can represent a unique number. Bar code reader is an input device getting th einformation from the bar code. |
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Term
INKJET PRINTERS ADVANTAGES AND DISADVANTAGES
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Definition
ADVANTAGES
cheaper then laser printer
smaller and lighter then laser printer
inkjet cartridges are cheaper then laser toners
can produce quality photograph printouts
DISADVANTAGES
.noisier then laser
.slow high-resolution colour printing
.cartridges dont hold much so need regular replacement
.when lots of ink is used page can crinkle and the ink will smudge while it is wet |
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Term
| LASER PRINTERS ADVANTAGES AND DISADVANTAGES |
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Definition
ADVANTAGES
high quality dry printouts
high speed
quiet
cheaper consumables. Per page cheaper then ink
large paper trays
Cartridges have a bigger capacity.
DISADVANTAGES
More expensive to buy then inkjet
tech is expensive to repair
larger heavier
cartridges have larger capacity
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