- Jun 14 Thu 2012 15:48
Borland C++ Compiler Enhancements 2.79
- May 23 Wed 2012 10:40
AC Power Supply - L, N, Ground
AC Power Supply:
L:帶電端
N:不帶電端
Ground:接地線
- May 23 Wed 2012 09:28
One Piece - 魯夫海賊團成員代表的國家
魯夫:巴西
索隆:日本
娜美:瑞典
騙人布:非洲
香吉士:法國
喬巴:加拿大
羅賓:俄羅斯
佛朗基:美國
- May 19 Sat 2012 01:43
光碟機出現驚嘆號,驅動程式可能已損毀或遺失解決方法
Step 1:在開始功能表中選擇『執行』,
Step 2:輸入『regedit』指令
Step 3:
在登錄碼:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E965-E325-11CE-BFC1-08002BE10318}
中尋找其中的 UpperFilers 和 LowerFilters,將之刪除(如果只有找到一項那就刪除一項)
然後重新啟動電腦就好了。
- May 09 Wed 2012 16:12
被動元件與主動元件(Passive Component and Active Component)
- Passive components can't introduce net energy into the circuit. They also can't rely on a source of power, except for what is available from the (AC) circuit they are connected to. As a consequence they can't amplify (increase the power of a signal), although they may increase a voltage or current (such as is done by a transformer or resonant circuit). Passive components include two-terminal components such as resistors, capacitors, inductors, and transformers.
- Active components rely on a source of energy (usually from the DC circuit, which we have chosen to ignore) and usually can inject power into a circuit, though this is not part of the definition.[1]. Active components include amplifying components such as transistors, triode vacuum tubes (valves), and tunnel diodes.
Reference:http://en.wikipedia.org/wiki/Electronic_component
我的理解:
任何必須依靠電流、或電流方向,才能施展其特性的功能者,稱為主動元件,反之則為被動元件。
任何能將功率增幅(Power)的,稱為主動元件,反之為被動元件。
兩者在電路上,皆會通過電子。
【範例】
主動元件:電晶體
被動元件:電阻、電容、電感、變壓器、二極體
- May 09 Wed 2012 09:34
Borland C++ Builder - W8058 Cannot create pre-compiled header: initialized data in header
Software - Borland C++ Builder
Problem - W8058 Cannot create pre-compiled header: initialized data in header
Solution - Select "None" in Pre-compiled headers section in Project Options Dialog in Borland C++ Builder 6.0.