Components of an ICT system
- A computer system- has hardware and software.
- Hardware- machinery which supports the software
- Software- programs on the computer, like Microsoft Office
- Input devices-
- allows data to be entered into a computer, like a scanner, digital camera, keyboard or graphics tablet.
- Output devices-
- allows information to be downloaded in the form of a 'hard' copy-like a printer, vinyl cutter machine or laser cutter.
- Input devices-
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CAD and CAM
CAD- computer-aided design
- Fast to use once one is familiar with the layout and there are shortcuts available.
- Easy to include variations and designs can be altered without erasing and redrawing.
- Standard components- easily combined to make new designs, designs can be seen in 3D.
- Initial expense is very high for hardware and software
- Staff need training, and it is hard to use if unfamiliar with it.
CAM- computer-aided manufacture
- Components are made exactly the same, time and time again.
- Machines can work non-stop, stopping only for maintenance
- Flexible production-machines produce a range of products
- Repairs-expensive, specialise engineers needed, could stop all production.
- If design is flawed, the components made with will be flawed.
- Without regular checking, mistakes could be in large numbers
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CNC- computer numerically controlled
- The same advantages as CAM
- Can be continually updated by downloading new software updates, which control the device settings that power the tooling
- Uses modern design software
- No need to make a prototype or model, which saves time and money
- It is more expensive than manually operated machines-initial costs are high.
- If it breaks, production is halted and outside expertise may have to be sought.
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