1.1.3 - Input, Output and Storage

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  • Created by: CubbyHD
  • Created on: 26-04-18 12:55

Input Devices

Some Input devices Include:

- Keyboard

- Mice

- Microphones

- Scanners 

- Joysticks

an input device is a piece of computer hardware equipment used to provide data and control signals to an information processing system such as a computer or information appliance.

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Things To Consider When Choosing Input devices

  1. Types of data - The user may want a device that uses simplistic data, so that the computer doesn’t have to do much mork in order to take the instructions from the device, and turn them into a visual on the output device

  1. Where will it be used - This is important because, If the input device can be used in multiple ways, then this means that it will be better for a user that maybe uses their computer system for multiple purposes.

  1. Cost considerations - The cost consideration that comes into someone's personal choice could be a huge impact as people with a smaller budget will like something that is affordable but also has all of the requirements that they need from a device.

  1. Volume of data - Users will want something that takes up less data so that they can have a device that doesn’t require much processing power, so their PC can focus on other main processes.

  1. User preferences - The user may wish to have some customisable preferences to their input device, so that they can customise it to their preference.

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Output Devices

Some Output devices Include:

- Printers 

- Speakers

- Monitors

- Actuators

An output device is any device used to send data from a computer to another device or user.

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Things To Consider When Choosing Output Devices

  1. Format? - This will need to be considered because the user may wish to have a volume output device rather than a visual one, so there for if the user bought a monitor then it would be completely useless for their desires.

  1. Quick output? - The output would need to be seen as quickly as possible because otherwise, the computer would become very hard to operate as there would be a delay on the actions the user takes which may lead them to repeat causing errors in work.

  1. How many users? - The projector would be a good outputting device for multiple users, as it stretches the image, so therefor, if you have a monitor for 20 people then that would mean that not all of the people would be able to see the information meaning that it would be inefficient.

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Storage

3 Types of storage:

- Magnetic uses a drive that can hold data just like a hard drive and because it is removable, then this means that there can be multiple storages that are interlinked to increase the overall size if the storage.

- Optical records data  by making marks in a pattern that can be read back with the aid of light.

- Flash is a read only erasable memory. It contains a grid of columns and rows with a cell that has a transistor on each end. The columns and rows, then store data, and they are read by the transistors that move around.

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ROM and RAM

ROM

- Read Only Memory

- Non volatile

- holds the memory for the PC startup

RAM

- Random Access Memory

- Volatile

- Holds the data for the current programs in use

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Virtual Storage

Virtual storage is a storage that is on an external server so that all of the data can be transferred across multiple different platforms, so this means that the data isn’t stored on your own system. It helps collaboration, because it means that work, of any kind, can be transported across multiple platforms so that you can continue your progress, wherever you go.

Disadvantages:

- Apps run slower

- Takes more time to switch between apps

- Less hard drive space for use

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