The sensor expansion board for STM32 Nucleo-144 supports an 8-channel digital microphone (MP34DT05-A) array. It supports two I2C interfaces for 9-axis measurement (LSM6DSL+LIS3MDL) achieved by combini...
During the optimization process, if you encounter a function with multiple exits, that is, multiple returns, try to change the logic to only one return; put the reading and calculation of variables be...
I have a 250G mobile Hitachi hard drive. When I read the disk, I found that one partition is missing. I originally divided it into 3 partitions. Now there are only 2. Can you help me check it out? Tha...
[i=s] This post was last edited by flyword on 2019-1-28 05:57 [/i] [align=left][font=宋体] Yesterday's post simply used the ADC module. This post starts with using the DAC. Generally speaking, the DAC c...
In Oracle, there is an EMP table with fields F1 and F2. However, there are 100,000 records in this table. Search for all records between the 11th and 21st records. Write a search statement and conside...