Bundle: Enhanced Discovering Computers ©2017, Loose-leaf Version + LMS Integrated MindTap Computing, 1 term (6 months) Printed Access Card
1st Edition
ISBN: 9781337351911
Author: Misty E. Vermaat, Susan L. Sebok, Steven M. Freund, Mark Frydenberg, Jennifer T. Campbell
Publisher: Cengage Learning
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Expert Solution & Answer
Chapter 7, Problem 20SG
Explanation of Solution
Types of scanners and reading devices:
- Optical scanners: An optical scanner is a light-sensing input device that reads printed information such as text and graphics and converts them into a digital form so that the computer can process them.
- The scanner captures information directly from a source document, which is the original form of the information. Source documents are classified as brochures, paychecks, time cards, photos, order forms, advertisement, invoices or any other documents.
- Scanner copies the file from the machine and generate a file of the document in the computer memory.
- Then, the copied file or photos can be viewed on the screen.
- Optical readers: An optical reader uses a light source to read characters, codes, marks, and converts them into digital data so that a computer can process them. It uses the following two technologies,
- The Optical Character Recognition (OCR) devices contain a small optical scanner for reading characters and sophisticated software to analyze the characters.
- Optical Mark Recognition (OMR) devices can read hand-drawn marks, such as small rectangles or circles. OMR software reads the marks in the test or survey forms. This software also reads and converts hand-drawn marks into electronic files.
- Bar code readers: A bar code uses laser beams to read the bar code labels. A bar code is an identification code that contains numbers and a pattern of parallel lines, dots, space of different widths.
- For quick identification, bar codes are labelled to a product or a package of the product such as clothing, mail, books, groceries, vehicles, and other packages...
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Alphabetic Telephone Number TranslatorMany companies use telephone numbers like 555-GET-FOOD so the number is easier for their customers to remember. On a standard telephone, the alphabetic letters are mapped to numbers in the following fashion:
A, B, and C = 2
D, E, and F = 3
G, H, and I = 4
J, K, and L = 5
M, N, and O = 6
P, Q, R, and S = 7
T, U, and V = 8
W, X, Y, and Z = 9
Write a program that asks the user to enter a 10-character telephone number in the format XXX-XXX-XXXX. The application should display the telephone number with any alphabetic characters that appeared in the original translated to their numeric equivalent. For example, if the user enters 555-GET-FOOD, the application should display 555-438-3663.
I would like help to resolve the following case
Chapter 7 Solutions
Bundle: Enhanced Discovering Computers ©2017, Loose-leaf Version + LMS Integrated MindTap Computing, 1 term (6 months) Printed Access Card
Ch. 7 - Prob. 1SGCh. 7 - Prob. 2SGCh. 7 - Prob. 3SGCh. 7 - Prob. 4SGCh. 7 - Prob. 5SGCh. 7 - Prob. 6SGCh. 7 - Prob. 7SGCh. 7 - Prob. 8SGCh. 7 - Prob. 9SGCh. 7 - Prob. 10SG
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