"Introduction to Information Security" Chapter II, Chapter III
Chapter two
There are other learning convert hex binary and decimal conversion, because the computer has only two low voltage, so take the information into binary.
third chapter
Learning data. Digital data to achieve a negative representation, as well as complement and the like. Text data compression. Audio data, the voltage signal varies in direct proportion to the acoustic wave. The image data of the bitmap, and vector graphics.
"Self-study is a craft" Chapter V
Section
Basic understanding of programming, input, output, process control functions, the compiler.
Section II
Type and value operator. The most basic operations plus a computer program that flow control.
Section III
Learning process control, if the language, for loops, while loops, and will not be used.
Section IV
Learning function print () function, but not really understand the optional parameter position as well as print () function usage.