A basic principle is a generic concept that applies to any device. In the case of internal and external devices, the basic principles are provided in this chapter. Following is a list of the basic principles and a brief explanation of each one.
• Necessary information should be concise.
• Device labels should be complete, clear, and concise.
• The same information should not be displayed in more than one format (e.g., you should not have a chart and a graph of the same data).
• The same information should not be displayed in more than one location.
• Information should be presented in the most effective means possible.
• Information should be presented in a format that does not interfere with the operation of the device.
• There should be a logical flow to the information.
• The user should be able to navigate to the desired information quickly and easily.
• The device should be easy to use.
• The device should be intuitive to use.
• The device should be self-explanatory.
• Users should not have to read an instruction manual to use the device.
• The device should be capable of being used by someone with a disability if the disability is well known.
• The device should be durable and require minimal maintenance.
Selecting the Appropriate Basic Principle
The basic principles are intended to be used as a checklist to check for compliance with the ISO 13407 standard. Not all of the basic principles will apply to every device. For example, you will not need to consider the basic principle that specifies that the device should be self-explanatory if the device is designed for use by someone with a disability. This is because blind people cannot use the device without the use of an external device that reads aloud the information on the device. Therefore, this basic principle will not apply to the selection of a device for use by a blind person. On the other hand, the basic principle that states that the device should be durable and require minimal maintenance will apply to all devices.
The basic principles can also be used when selecting a device for use by a blind person. In this case, you will need to consider all of the basic principles, not just those that are applicable to a blind person. This is because the basic principles are generic. Therefore, they can be applied to both internal and external devices, and the same basic principles can be used to select a device for use by a blind person.
Comparing an Internal Device with an External Device
The basic principles can be used to compare an internal device with an external device. You can use the principles to determine which device you will select for a particular application. One of the basic principles states that the device should be easy to use. This principle will help you to determine if you should select an internal device or an external device for a particular application.
The internal device will be easier to use than the external device. This is because the internal device will be more self-explanatory than the external device. The internal device will also be more intuitive to use than the external device. This is because the internal device will be less likely to have to be read to the user in order for the user to understand how to operate it.
Comparing Internal Devices
If you have two internal devices, you can use the basic principles to compare the two devices. You can use the principles to determine which device you will select for a particular application. One of the basic principles states that the device should be self-explanatory. This principle will help you to determine if you should select one internal device or another device for a particular application.
The internal device that is self-explanatory will be easier to use than the internal device that is not self-explanatory. This is because the internal device that is self-explanatory will be more intuitive to use than the internal device that is not self-explanatory. This is because the internal device that is self-explanatory will be less likely to have to be read to the user in order for the user to understand how to use it.
Comparing External Devices
If you have two external devices, you can use the basic principles to compare the two devices. You can use the principles to determine which device you will select for a particular application. One of the basic principles states that the device should be intuitive to use. This principle will help you to determine if you should select one external device or another device for a particular application.
The external device that is intuitive to use will be easier to use than the external device that is not intuitive to use. This is because of the following reasons. The external device that is intuitive to use will be more self-explanatory than the external device that is not intuitive to use. This is because the external device that is intuitive to use will be less likely to have to be read to the user in order for the user to understand how to use it. The external device that is intuitive to use will be easier to use than the external device that is not intuitive to use. This is because the external device that is intuitive to use will require less maintenance and will be less likely to fail than the external device that is not intuitive to use.
Comparing Internal and External Devices
If you have an internal device and an external device, you can use the basic principles to compare the two devices. You can use the principles to determine which device you will select for a particular application. One of the basic principles states that the device should be durable and require minimal maintenance. This principle will help you to determine if you should select an internal device or an external device for a particular application.
The external device will be more durable and require less maintenance than the internal device. This is because the external device will be less likely to have to be read to the user in order for the user to understand how to use it. The external device will be less likely to fail and will require less maintenance than the internal device. This is because the external device will be less likely to have to be read to the user in order for the user to understand how to use it.
The internal device will be easier to use than the external device. This is because the internal device will be more self-explanatory than the external device. The internal device will also be more intuitive to
