Give four benefits of direct manipulation. Also list four problems of direct manipulation.
What will be an ideal response?
Benefits:
a) Control/display compatibility
b) Less syntax reduces error rates
c) Errors are more preventable
d) Faster learning and higher retention
e) Encourages exploration
Problems:
a) Spatial or visual representations can be too spread out
b) High-level flowcharts and database-schema can become confusing
c) Designs may force valuable information off of the screen
d) Users must learn the graphical representations
e) The visual representation may be misleading
f) Typing commands with the keyboard may be faster
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C++ stores an array in adjacent memory locations. In what array position (counting from the start) will the element myArray [7][21] be stored in, if myArray has 10 rows and 50 columns?
What will be an ideal response?
State which of the following are true and which are false. If false, explain why.
1) The impressive functions performed by computers essentially involve the manipulation of zeros and ones. 2) People prefer to manipulate bits instead of characters and fields because bits are more compact. 3) People specify programs and data items as characters; computers then manipulate and process these characters as groups of zeros and ones. 4) A person’s 5-digit zip code is an example of a numeric field. 5) A person’s street address is generally considered to be an alphabetic field in computer applications.
The capacity of a system to keep functioning in the face of hardware or software failure is called ________.
Fill in the blank(s) with the appropriate word(s).
Inserting and removing items from an array are called ____ time operations.
A. constant B. linear C. quadratic D. exponential