Counting frequency is one of those tasks that seems simple on the face of it, but actually has quite a bit of nuance. There are two obvious methods, of which the first is to count zero crossings for ...

The simple, no-cost connection in Figure 1 provides frequency measurement for eight pulse trains through a PC's LPT1 port. The method uses a special BIOS interrupt and its handler routine without any ...

Counting frequency is one of those tasks that seems simple on the face of it, but actually has quite a bit of nuance. There are two obvious methods, of which the first is to count zero crossings for ...