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Which of the following is an example of a validity check?
A. The computer ensures that a numerical amount in a record does not exceed some predetermined amount.
B. As the computer corrects errors and data are successfully resubmitted to the system, the causes of the errors are printed out.
C. After data for a transaction are entered, the computer sends certain data back to the terminal for comparison with data originally sent.
E. The computer flags any transmission for which the control field value did not match that of an existing file record.
Young-Helmholtz Theory
A theory of color vision that proposes the eye contains three types of color receptors, which are sensitive to red, green, and blue.
Primary Color
One of a small group of colors (typically red, green, and blue for light or cyan, magenta, and yellow for pigment) that can be combined to create a full spectrum of colors.
Trichromatic Analysis
A theory of color vision based on the idea that the eye contains three types of color receptors, sensitive to red, green, and blue light.
Primary Colors
A set of colors from which all other colors can be obtained through mixing; in the context of additive color mixing – red, green, and blue; for subtractive mixing – cyan, magenta, and yellow.
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