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554 days ago
There are five main reasons why engineers use Verilog-AMS: 1.to model components, 2.to create test benches, 3.to accelerate simulation, 4.to verify mixed-signal systems, and 5.to support the top-down design process.
567 days ago
1. Python also supports complex numbers (复数)。imaginary numbers are written with a suffix of ‘j’ or ‘J’. Complex numbers with a nonzero real component are written as ‘(real+imagj)’, or can be created with the ‘complex(real, imag)’ function. Complex numbers are always represented as two floating point numbers, the real and imaginary part （实部，虚部）. To extract these parts from a complex number z, use z.real and z.imag. 2。Multiple assignment: the variables a and b simultaneously get the new values 0 and 1. a, b = 0, 1 The right-hand side expressions are evaluated from the left to the right. a, b = b, a+b 3. To iterate over the indices of a sequence, combine range() and len() as follows: >>> a = [’Mary’, ’had’, ’a’, ’little’, ’lamb’] >>> for i in range(len(a)): ... print i, a[i] ... 0 Mary 1 had 2 a 3 little 4 lamb 4. There are three built-in functions that are very useful when used with ...
