1. Power saving (because the liquid crystal itself does not emit light, the power consumption is low)
2. Can only be driven by low-frequency AC voltage, DC will damage the LCD
3. Types: segment LCD, c...
As shown in Figure 1, are unused pins configured as "three-state input input" or "three-state input plus weak pull-up"? In Figure 2, why are these dual_purpose_pins set to "use as regular IO"? They ar...
[Abstract] If RFID is to be used in urban management, there are still many problems, such as security and privacy issues. For example, the RFID chip used in the manhole cover has problems such as data...