The mass of a star can be determined by studying a. the wavelength of light emitted by the star. b. the color of the star. c. the distance between the star and Earth. 21. ANS: C 22. ANS: A 23.
(May 2010) (Learn how and when to remove this template message) In computing, an interface is a shared boundary across which two separate components of a computer system exchange information. The exchange can be between software, computer hardware, peripheral devices, humans and combinations of these.
Interacting with the world around us. Interface is an issue for anything that is âusedâ; telephone touch pads, lift buttons and light switches are all examples of real world interfaces. An interface enables a user to interact with a system to perform a task. For example: 1  website navigation (hyperlinks, search tools, etc.) enables a user to find content. 2  a shopping cart/basket system enables goods to be ordered. 3  the formatting palette in Microsoft Word enables a user to change text colour, size, font, etc.