By Mark Edward Soper, Scott William Mueller, David L. Prowse
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Extra resources for CompTIA A+ Cert Guide - 220-701 and 220-702 Exam
If you cannot subtract it, write down binary 0. Step 4. Repeat Step 3 until you attempt to subtract 20 (1). Again, write down binary 1 if you can subtract it or binary 0 if you cannot. The binary values (0 and 1) you have recorded are the binary conversion for the decimal number. Unlike the division method, this method puts them in the correct order; there’s no need to write them down in reverse order. For example, to convert 115 decimal to binary using the subtraction method, see Figure 1-3. 115 (decimal)=1110011 (binary) subtraction method 1 1 1 0 0 1 1 115 -64 51 -32 19 -16 3 -8 x 3 -4 x 3 -2 1 -1 0 (2 6) (2 5) (2 4) (2 3) (2 2) (2 1) (2 0) X = can’t subtract (enter 0) Enter 1 when you can subtract Figure 1-3 Converting 115 decimal to binary with the subtraction method.
In computer storage, however, pure text is seldom stored alone. WordPad and other word-processing programs such as Microsoft Word, OpenOffice Writer, and Corel WordPerfect enable you to boldface, underline, italicize, and make text larger or smaller. You can also use different fonts in the same document. Most modern programs also enable you to insert tables, create columns of text, and insert pictures into the text. Some, such as Microsoft Word, have provisions for tracking changes made by different users.
Com Chapter 1: PC Technician Essentials 13 From the scale you can see that the sentence uses 43 bytes. You can prove this to yourself by starting up Windows Notepad and entering the text just as you see it printed here. TXT and view the File properties. You’ll see that the text is exactly 43 bytes. Do most computer programs store just the text when you write something? To find out, start up a word-processing program, such as Windows WordPad or Microsoft Word. Enter the same sentence again, and save it as EXAMPLE.
CompTIA A+ Cert Guide - 220-701 and 220-702 Exam by Mark Edward Soper, Scott William Mueller, David L. Prowse