Question

State two uses of headers and footers in a document.
What are wildcards.
What are the use of a super computer?
Name the three components of a CPU
What is Flatbed Scanner?​

Answer 1

1.A header is the top margin of each page, and a footer is the bottom margin of each page. Headers and footers are useful for including material that you want to appear on every page of a document such as your name, the title of the document, or page numbers.

2. In software, a wildcard character is a kind of placeholder represented by a single character, such as an asterisk, which can be interpreted as a number of literal characters or an empty string. It is often used in file searches so the full name need not be typed.

3. Traditional uses for supercomputers have been in oil and gas exploration, converting seismic data into maps that indicate where to drill oil and/or gas wells. They are employed in engineering simulations such as fluid dynamics calculations on automobiles that look at drag and aerodynamic efficiency.

4. The CPU is made up of three main components, the control unit , the immediate access store and the arithmetic and logic unit .

5. A scanner that provides a flat, glass surface to hold a sheet of paper, book or other object for scanning. The scan head is moved under the glass. Flatbed scanners often come with sheet feeders for scanning multiple sheets of paper rather than one at a time.

Hope this all will help you

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