The various equipment which include the computer, the software and the Web sight etc. can be used the user understanding the use method and the like, the comfort and efficiently. General "ease of use", "you use and mean the selfishness", but there are also times when it can give the meaning language such as usefulness, utilization characteristic, convenience, availability and active thing.
Originally English "usable/useable: In the noun shape of enabled "," useful: It is useful ", unlike," "method of using understands and the inconvenience the ? leprosy" operation such as trouble "it is not, (is little) with the word which displays the aspect which is said. Effectiveness and performance for the user about some purpose can be achieved easily, whether it can pull out the functional efficiency which that product has sufficiently, being something which shows degree of satisfaction, operativity (easily to handle prevention of sheath operational error), acknowledgment characteristic comfort (feeling good quality), safety
International Standard ISO 9241 (human engineering requirement of the office work of using VDT) with in the definition, "the product which is, the case where it is used in order to achieve the goal which is appointed in the utilization circumstance which is appointed by the user which is appointed, validity (effectiveness), efficiency (efficiency), and degree of satisfaction of the user (satisfaction) it is made extent". ISO which is International Standard of usability 13407 (human central design processfor the interactivesystem) also definition conforms to this.
In computer field,with the terminology which was used pertaining to HCI and human interface, to the nineties, difficult to use from the eighties, it was located as activity of cancellation, but it seems as in the definition of ISO 9241/13407 from around the nineties latter half, it has reached the point where it can give more positive meaning being agreeable.
Doing, you call the activity which investigates quantitatively the "usability test" e.g., it has using the computer equipment and the software and the Web page etc. for the user really, the perplexity and mistake of operation surveys, the hearing and the questionnaire does.The enterprise information portal (EIP)at the time of construction, when such test is done for the picture design which increases business efficiency, it is many.
In the peripheral document ISO/TR of aforementioned ISO 13407 16982, usability appraisal technique of 12 types is introduced.
User testing * Inspection
User observation Document based method
Performance appraisal Model based method
Critical incident method Specialist appraisal
Question paper method Automatic operation appraisal
Interview
method
Joint design appraisal
method
The usability appraisal technique which is picked up with ISO/TR 16982
Furthermore even in field of handicapped person welfare, from the eighties latter halfaccessibility(accessibility: Accessibility) with in the form of opposite, the concept of usability is used. ", You can use this securely" ease of use "compared to?" there is a nuance which emphasizes the aspect "you can use safely?", there is many a thing where "useability" is used as an English inscription.
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