A simple, low cost, and precision frequency meter uses only two pins of a pc parallel port (Figure 1). The TTL-level periodic input signal with frequency f IN connects to the ACK pin of LPT1. This ...
A 55-year-old man from Edmonton, Alberta, Canada, died when the semitruck he was driving hit a guardrail and overturned in Butte-Silver Bow County, the Montana Highway Patrol said Sunday.
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