1.1 Hardware
The basic hardware from the computer: CPU / memory / motherboard / hard disk / card / graphics card and other components, only the hardware but can not communicate, and communication between the hardware
1.2 operating system
Synergy between the operating system for hardware or control work, common operating systems are:
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windows
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xp
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win7
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win10
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windows server
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linux
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centos online companies generally use (poor patterning)
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ubuntu personal development (graphical better)
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redhat enterprise
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mac office
1.3 interpreter or compiler
Programming language developers to write a tool that converts user-written code into 010101 to the operating system to perform
1.3.1 interpreted and compiled language
Interpreted language is similar: real-time translation, on behalf of: Python / PHP / Ruby / Perl
A compiled language like this: After finished, and then the whole translation representatives: C / C ++ / Java
1.4 software (applications)
Also known as application software that we use on computer tools, like: Notepad / picture viewing / game
1.5 hex
For a computer, whether it is a file stored / network transmission input are essentially: Binary (01010101), such as: storing video / image / computer files are binary; QQ expression / micro transmitted message chat / text / voice / video , but also all are binary.
Hex:
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Binary: Internal computer
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Octal
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10 hex: human beings use, the computer 10 can obtain the decimal Generally, internally and automatically converted into binary operations, and
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Hex: generally used to represent a binary (represented more data with less content), generally: \ begin with x.
| Binary | Octal | Decimal | Hex |
|---|---|---|---|
| 0 | 0 | 0 | 0 |
| 1 | 1 | 1 | 1 |
| 10 | 2 | 2 | 2 |
| 11 | 3 | 3 | 3 |
| 100 | 4 | 4 | 4 |
| 101 | 5 | 5 | 5 |
| 110 | 6 | 6 | 6 |
| 111 | 7 | 7 | 7 |
| 1000 | 10 | 8 | 8 |
| 1001 | 11 | 9 | 9 |
| 1010 | 12 | 10 | a |
| 1011 | 13 | 11 | b |
| 1100 | 14 | 12 | c |
| 1101 | 15 | 13 | d |
| 1110 | 16 | 14 | e |
| 1111 | 17 | 15 | f |
| 10000 | 20 | 16 | 10 |
| 10001 | 21 | 17 | 11 |
| 10010 | 22 | 18 | 12 |
| 10011 | 23 | 19 | 13 |
| 10100 | 24 | 20 | 14 |
1.6 learn programming language
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Installation interpreter / compiler / virtual machine
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Learning grammar