求翻译：基于单片机实现SPWM的方法控制电路简单可靠，利用软件产生SPWM波，减轻了对硬件的要求，且成本低，受外界干扰小。是什么意思？

SPWM method based on MCU control circuit is simple and reliable, the use of software resulting SPWM wave, reducing the hardware requirements, and low cost, small by outside interference.

Based on a single-chip achieve SPWM of simple and reliable methods to control circuits SPWM arising from the use of the software and hardware requirements to reduce the production costs are low, and free from outside interference is small.

Realizes the SPWM method control circuit simply based on the monolithic integrated circuit reliable, has the SPWM wave using the software, reduced to the hardware request, also the cost is low, is been small the external interference.

Based on single chip computer to realize simple and reliable method of SPWM control circuits, use software to generate SPWM wave, thereby reducing the requirement for hardware and low cost, subject to external noise.

The method control circuit realizing SPWM on the basis of the one-chip computer is simple and reliable, utilize software to produce SPWM wave, has lightened the requirements for hardware, and with low costs, it is small to interfere with by the external world.