关于Arduino模拟软件VirtualBreadBoard的一点说明

在论坛上看到VirtualBreadBoard的，觉得非常不错，在官网上下载了最新版本试用，详细阅读了说明，发现VBB和其他SPICE电路仿真是有区别的。

原文说明如下：
Whats the difference between a Simulation and an Emulation?
Emulation models behaviour whereas simulation emerges behaviour. A
behaviour might be to turn on a LED connected via a resistor to a
microcontroller pin. A simulation might compute the circuit resistance and
equivalent resistance of the power driver of the pin along with the voltage
curve and forward voltage of the diode to resolve the instantaneous current
and then lookup the luminosity curve of the diode to render a faithful
representation of the color and intensity of the LED the user might expect to
see. An emulation on the other hand just draws a LED as on when the PIN is
HIGH and off when the PIN is LOW. The resulting behaviour from the user and
microcontroller are the same. A LED is on when the pin is HIGH and the LED is
off when the pin is LOW. Naturally emulations are faster to calculate and easier
to implement. VBB is a circuit emulator and SPICE is a circuit simulator.
Its important to understand this difference when using VBB because you
cannot place capacitors and resistors and expect for example behaviours such
as filters to emerge. There are however common work arounds to achieve
common behaviours using properties of the discrete components.

区别在于，VBB仅作电路的模仿(emulation)，其结果并不等同于实际电路，比如电阻值、电流大小等等，只是在亮灯、熄灯这些形式上的模仿。而诸如Multisim这些专业电路仿真软件是模拟(Simulation)，得到的值就是实际电路值。

综上所述，个人认为VBB适合非电子专业爱好者，对于学习和开发有十分直观的帮助，能够提高效率节省大量时间。而其模拟结果在实际操作时需要斟酌，VBB避免烧坏电路板的说法有些站不住脚，请大家多多留意了。