The MMX architecture does not include conditional branch instructions. How then are conditional operations implemented by MMX?
What will be an ideal response?
Conditional branches become largely meaningless when there are parallel subword operations, because there
are multiple results (one for each subword of the result). Of course, you could design new branch conditions
such as branch if all subwords are zero of if not all subwords are zero. The MMX instruction set takes a different
approach and performs a comparison between two words. Then, instead of setting a flag bit, it sets all bits of
the destination operand either to 1 (condition true) or to 0 (condition false); for example, in 32 bits the
comparison for equality between the words 0x13345678 and 0x123456AA would be 0x00FFFF00 (assuming
byte comparisons).
By setting the bits of a destination to all 1s or all 0s, we create a mask of either 00000000 or 11111111 (using
byte arithmetic). This mask can then be used in logical operations to set bits, negate bits, or to toggle bits.
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Use the man command to display the online manual pages of the grep command. How many versions of grep does your system support? Write down the names of these versions. How would you display a brief description of the built-in command set?
What will be an ideal response?
Which is not a way to proceed when creating a catalog of forms to help you understand the information flow currently in use in business?
A) Collect examples of all the forms in use. B) Note the type of form. C) Document the intended distribution pattern. D) Compare the intended distribution pattern with who actually analyzes the form.
Which of the following is not true regarding generational differences?
A) Many older members of this community have very rudimentary computer skills, and their needs are very simple. B) Our society is in the midst of a technology shift and all older members of this community are just barely, if at all, computer literate. C) Many senior citizens rely on e-mail to communicate with family members, but they are only comfortable accessing it from their home computer where an e-mail program is easily accessed via a desktop icon without a password. D) Senior citizens probably do not travel with their own computer and have to rely on what is available.
To apply a theme to only one slide or selected slides, right-click it on the Design tab, and then click Apply to ____.
A. One Slide B. Selected Slides C. Chosen Slides D. Checked Slides