How many timers do I need to use to collect variable frequencies from 5KHz to 8KHz using the normal IO of 51? I used one timer, but the frequency I collected was an order of magnitude different from t
In Windows, usually one driver can only drive one network card. The main parameters of the network card are 1. IRQ 2. I/O address 3. Base Memory 4. DMA. I am now writing a network card driver for Vist
4. Optical fiber cable suitable for FTTH construction Multimode coupled fiber Multimode coupled fiber is widely used in the field of optical fiber communication and optical fiber sensing. With the dev
In actual applications, the online monitoring device has different requirements for power supply reliability depending on the working mode. Currently, there are two main working modes for online monit
The following figure shows the two ports P0 and P1 of the (51) single-chip microcomputer. Each output pin of P0 is connected to the input of a three-state gate, for a total of 8 three-state gates. The