T1 and T2 are PNP transistors, and the collector is grounded. So when the input IN+ and IN- are both greater than zero, the collector junctions of T1 and T2 are reverse biased, and they either work in
For the OV7670 camera, many driver codes found online are based on modules with FIFO cache. Now consider a question: remove the FIFO chip, and then connect the camera's data line and clock line direct
I made a dual power supply designLithium battery 3.6V---Diode-------MSP430 ××CC DVCCButton battery 3V------Diode------msp430 ××CC is used as an external battery to maintain RAM data after power failur