Unitialized variables in Perl have the value
(a) NULL
(b) undef
(c) 0
(d) nil
(b) undef
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Perform the following decimal subtraction problems using binary numbers in a 4-bit word. Use 2's complement notation to convert the subtraction problem into an equivalent addition problem. Then carry out the binary addition. Show your work and your carry bits as in the previous examples. Indicate when an overflow occurs.
From +2 subtract + 2 The subtraction problem is: +2 — (+2) The equivalent addition problem is: +2 + (-2)
When constructing references, the reference should be of the same data type as the ____________________ to which it refers.
Fill in the blank(s) with the appropriate word(s).
The Toolbox is the primary tool you use to place ____________________ such as buttons on the Windows Form object.
Fill in the blank(s) with the appropriate word(s).
In ________ reality, the real-world is supplemented with computer-generated information.
A. augmented B. digital C. smart D. virtual