What is a barcode reader and how are they typically connected to a computer?
What will be an ideal response?
A barcode reader is used to scan barcodes on products at the point of sale (POS) or when taking inventory. The reader might use a wireless connection, a serial port, a USB port, or a keyboard port.
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Which of the following input statements does not correctly read a string?
A. scanf("%s", str); B. scanf("%.30s", str); C. scanf("%30s", str); D. scanf("%*s", str); E. scanf("%*30", str);
The _______________ command will display the name of your computer.
Fill in the blank(s) with the appropriate word(s).
A Web site runs a contest and in the rules, it says that all email entries must be received by October 15, 2004 at 5pm. Is this a precise date and time? If not, explain how to correct the problem.
What will be an ideal response?
One of the great social concerns about free speech and a free press is that the "marketplace of ideas" is not necessarily a free market; without appropriate communication ____- that is the media, such as the Internet, newspapers, and television, through which communication travels - neither is possible.
A. doctrine B. conduits C. degrees D. guidelines