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Phyllis wants to do an upgrade installation from Windows XP Professional to Windows Vista, and the Windows Vista Upgrade Advisor says her computer is eligible for an upgrade installation However, when she boots her computer from the Vista installation disc, the Upgrade option is grayed out Why is that What s the recommended CPU speed and amount of RAM needed to install Windows Vista Business Dwight wants to upgrade his old Windows XP system to Windows Vista, but he isn t sure whether his hardware is suf cient to support Vista What Microsoft tools would you recommend that he use to check his system Michael is about to replace his aging Windows XP Home machine with a hotrod PC running Windows Vista Ultimate, but he wants to transfer all his documents to the new computer What tool can you recommend that he use to do that What happens if you don t run the Windows Activation Client for Windows Vista within 30 days of installation

It s important to understand that the size of a type can change, depending on factors such as your computer s processor type, operating system (Mac OS X, Windows, or Linux, for example), and your development environment. Remember to read the documentation that comes with your compiler.

int myInt;

2 3

reserves 4 bytes of memory for the exclusive use of the variable myInt. If you later assign a value to myInt, that value is stored in the 4 bytes allocated for myInt. If you ever refer to myInt s value, you ll be referring to the value stored in myInt s 4 bytes. If your compiler used 2-byte ints, the preceding declaration would allocate 2 bytes of memory for the exclusive use of myInt. As you ll see, it is important to know the size of the types you are dealing with. Why is the size of a type important The size of a type determines the range of values that type can handle. As you might expect, a type that s 4 bytes in size can hold a wider range of values than a type that s only 1 byte in size. Let s discuss how all this works.

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Each byte of computer memory is made up of 8 bits. Each bit has a value of either 1 or 0. Figure 5-3 shows a byte holding the value 00101011. The value 00101011 is said to be the binary representation of the value of the byte. Look closer at Figure 5-3. Notice that each bit is numbered (the bit numbers are above each bit in the figure), with bit 0 on the extreme right side to bit 7 on the extreme left. This is a standard bit-numbering scheme used in most computers.

Use the following terms to complete the following sentences Not all terms will be used 1 GHz installation network drive optical drive upgrade Upgrade Advisor Windows 2000 Professional

Figure 5-3. A byte holding the binary value 00101011. Note that the rightmost bit is bit 0, and the leftmost bit is bit 7. Each bit contributes to the total value of the byte, if the bit is set to 7.

Notice also the labels that appear beneath each bit in the figure ( Add 1, Add 2, etc.). These labels are the key to binary numbers. Memorize them (it s easy each bit is worth twice the value of its right neighbor). These labels are used to calculate the value of the entire byte. Here s how it works: Start with a value of 0. For each bit with a value of 1, add the label value below the bit. That s all there is to it! In the byte pictured in Figure 5-3, you d calculate the byte s value by adding 1 + 2 + 8 + 32 = 43. Where did we get the 1, 2, 8, and 32 They re the bottom labels of the only bits with a value of 1. Try another one. What s the value of the byte pictured in Figure 5-4

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Figure 5-4. What s the value of this byte Remember, only the bits set to 1 contribute to the value of the byte.

Figure 5-5. What s the value of this byte Note that this byte holds the largest value a byte can hold.